Class VII

One-third of a number added to itself gives 10, is represented as
  1. x/3 + x + 10 = 0
  2. x/3 + x = 10
  3. x/3 + 10 = x
  4. None of these
If seven times a number is 15 less than twelve times the same number, then the number is
  1. 2
  2. 3
  3. 4
  4. 5
Solve: 3s + 12 = 0
  1. None of these
  2. s = 4
  3. s = -4
  4. s = 5
If x/5 - 2 = 6, then the value of x is`
  1. 10
  2. 20
  3. 30
  4. 40
The solution of the equation ax - b = 0 is
  1. -b/a
  2. b/a
  3. -a/b
  4. a/b
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