CBSE Questions for Class 8 Maths Linear Equations In One Variable Quiz 3 - MCQExams.com

Solve the equation:
$$\displaystyle\frac { x-5 }{ 7 } =\displaystyle\frac { x+3 }{ 2 } $$.
  • $$x=-\displaystyle\frac { 31 }{ 5 } $$
  • $$x=-\displaystyle\frac { 11 }{ 5 }$$
  • $$x= \displaystyle\frac { 31 }{ 9 }$$
  • $$x=-\displaystyle\frac { 26 }{ 5 } $$
Lalit's brother is thrice as old as Lalit. If brother's age is 60 years then Lalit's age is 
  • 30 yrs
  • 10 yrs
  • 20 yrs
  • 60 yrs
Linear equation in one variable has
  • Only constant term.
  • Only one variable with power $$1$$.
  • Only one term with a variable.
  • Only one variable with any power.
If $$x-4=5$$, then the value of $$x$$ is-
  • $$-1$$
  • $$9$$
  • $$-9$$
  • $$1$$
Find $$x$$, if $$12-(9+3x)=18x$$.
  • $$\dfrac{-1}{7}$$
  • $$\dfrac{7}{5}$$
  • $$\dfrac{1}{7}$$
  • $$-7$$
Solve the equation: $$\dfrac{7x - 3}{3x}=2$$
  • $$x=3$$
  • $$x=2$$
  • $$x=1$$
  • $$x=-1$$
Find the value of $$ p$$ in the linear equation: $$4p + 2 = 6p + 10$$
  • $$p=-4$$
  • $$p=-3$$
  • $$p=-2$$
  • $$p=-1$$
If $$1$$ is subtracted from a number it becomes $$\dfrac{1}{8}$$. Find the original number.
  • $$\dfrac{8}{9}$$
  • $$\dfrac{-9}{8}$$
  • $$\dfrac{9}{8}$$
  • None of the above.
Reduce the following linear equation: $$2x + 5 = 3$$
  • $$x=1$$
  • $$x=-1$$
  • $$x=0$$
  • $$x=2$$
$$\dfrac{3}{5}$$th of a number subtracted from $$\dfrac{3}{4}$$th of that number gives $$18$$. Find the number.
  • $$110$$
  • $$100$$
  • $$120$$
  • None of the above.
When a number is divided by $$25$$, the result is $$-25$$. The number is:
  • $$625$$
  • $$-625$$
  • $$15625$$
  • $$3125$$
Find $$v$$, if $$\displaystyle v+11=77-9v$$.
  • $$\dfrac{33}{5}$$
  • $$\dfrac{5}{33}$$
  • $$-\dfrac{5}{33}$$
  • $$\dfrac{15}{33}$$
If $$\displaystyle 4(3-n)=3n$$, then find the value of $$n$$.
  • $$\dfrac{7}{12}$$
  • $$-\dfrac{12}{7}$$
  • $$\dfrac{12}{7}$$
  • $$-\dfrac{7}{12}$$
If the sum of three consecutive integers is $$63$$. Find the smallest number.
  • $$11$$
  • $$15$$
  • $$23$$
  • $$20$$
The sum of four consecutive even integers is $$92$$. Find the largest number.
  • $$20$$
  • $$22$$
  • $$24$$
  • $$26$$
$$10$$ is subtracted from the product of $$x$$ and $$9$$, the result is $$80$$. The number is 
  • $$20$$
  • $$10$$
  • $$1$$
  • $$9$$
Calculate the value of $$x$$, when $$2x+3=3x-4$$.
  • $$-7$$
  • $$-\cfrac{1}{5}$$
  • $$1$$
  • $$\cfrac{1}{5}$$
  • $$7$$
Solve the equation: $$\dfrac{x+2}{2x}=1$$
  • $$x=2$$
  • $$x=3$$
  • $$x=4$$
  • $$x=5$$
If $$x + 1 = 23$$, calculate the value of $$3x + 3$$.
  • $$22$$
  • $$46$$
  • $$66$$
  • $$69$$
Find the value of $$x$$ which satisfies $$\displaystyle 5x+3=10x-17$$.
  • $$1$$
  • $$2$$
  • $$3$$
  • $$4$$
  • $$5$$
If $$\displaystyle \frac{a-b}{b}=\frac{3}{7}$$, which of the following must also be true?
  • $$\displaystyle \frac{a}{b}=-\frac{4}{7}$$
  • $$\displaystyle \frac{a}{b}=\frac{10}{7}$$
  • $$\displaystyle \frac{a+b}{b}=\frac{10}{7}$$
  • $$\displaystyle \frac{a-2b}{b}=-\frac{11}{7}$$
Solve for $$x$$:
$$\dfrac {7}{3x + 4} = \dfrac {7}{6x - 2}$$
  • $$-2$$
  • $$-1$$
  • $$0$$
  • $$2$$
Solve the equation: $$\dfrac{2z}{1-z}=6$$
  • $$z = \dfrac{1}{4}$$
  • $$z = \dfrac{3}{4}$$
  • $$z = \dfrac{2}{4}$$
  • $$z = \dfrac{3}{7}$$
Solve the equation: $$-(x-5)=x-2$$.
  • $$x=\dfrac { 7 }{ 2 } $$
  • $$x=-5$$
  • $$x=3$$
  • $$x=\dfrac{1}{2}$$
Solve the equation: $$-2x+6=4x-2$$.
  • no solutions
  • $$0$$
  • $$3$$
  • $$\dfrac {1}{2}$$
  • $$\dfrac {4}{3}$$
Three more than twice a integer is equal to $$4$$. What is the integer? 
  • $$0.2$$
  • $$0.3$$
  • $$0.4$$
  • $$0.5$$
If $$a\neq 0$$ and $$\dfrac{5}{x}=\dfrac{5+a}{x+a}$$, what is the value of $$x$$?
  • $$-5$$
  • $$-1$$
  • $$5$$
  • $$2$$
 If $$3$$ times a number is equal to $$\dfrac{3}{2}$$, what is the number? 
  • $$\dfrac{1}{3}$$
  • $$\dfrac{1}{2}$$
  • $$\dfrac{2}{3}$$
  • $$2$$
If $$\dfrac { 1 }{ 7 } +\dfrac { x }{ 7 } =3$$, calculate the value of $$x$$.
  • $$20$$
  • $$7$$
  • $$3$$
  • $$1$$
Which of the following equations does not have a solution in integers?
  • $$x + 1 = 1$$
  • $$x - 1 = 3$$
  • $$2x + 1 = 6$$
  • $$1 - x = 5$$
0:0:1


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