CBSE  /  Class 8  /  Maths  /  Linear Equations in One Variable

  • 1. 
    The root of the equation z + 4 = -8 is

  • 3
  • -32
  • 12
  • 4

  • 2. 
    The root of the equation 3x = \(\frac{20}{7}\) - x is

  • 10
  • \(\frac{20}{21}\)
  • -\(\frac{5}{7}\)
  • \(\frac{5}{7}\)

  • 3. 
    The root of the equation 2x + 3 = 2(x - 4) is

  • 2
  • 4
  • 0
  • does not exist.

  • 4. 
    The solution of the equation \(\frac{5}{x}\) = 2 is

  • 10
  • \(\frac{2}{5}\)
  • \(\frac{5}{2}\)
  • \(\frac{1}{10}\)

  • 5. 
    The difference of two numbers is 21. The larger number is x. The smaller number is

  • 21 + x
  • 21 - x
  • x - 21
  • -x - 21

  • 6. 
    In a two digit number, the unit’s digit is x and the ten’s digit is y. Then, the number is

  • 10y + x
  • 10x + y
  • 10y - x
  • 10x - y

  • 7. 
    When 9 is added to two times a number, we get 67. The number is

  • 25
  • 27
  • 29
  • 31

  • 8. 
    The value of x in \(\frac{3}{4}\) x = 7 - x is

  • 4
  • 3
  • \(\frac{7}{3}\)
  • 7

  • 9. 
    \(\frac{3}{4}\) part of a number is 5 more than its \(\frac{2}{3}\) part. This statement in the form of an equation is

  • \(\frac{2}{3}\) x - \(\frac{3}{4}\) x= 5
  • \(\frac{2}{3}\) x - 5 =\(\frac{3}{4}\) x
  • \(\frac{3}{4}\) x = \(\frac{2}{3}\) x + 5
  • \(\frac{3}{4}\) x - 5 = -\(\frac{2}{3}\) x

  • 10. 
    The root of the equation 5x - 8 = 7 is

  • 1
  • 2
  • 3
  • -3
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