Mathematics : Linear Equations in One Variable

If 1 is added to both sides of x – 1 = 18, then we have:

• x – 1 + 1 = 18 – 1

• x – 1 + 1 = 18 + 1

• x – 1 + 1 = 18 – 2

If 3 is transposed from R.H.S. to L.H.S. in 5x + 3 = 3 + 2x, then we have:

• 5x + 3 – 3 = 2x

• 5x + 3 + 3 = 2x

• 5x = – 3 + 2x – 3

If my age is 18 years, then what will be my age after 5 years?

• 18 years

• 13 years

• 23 years

If my present age is 20 years, then what was my age 3 years ago?

• 23 years

• 17 years

• 20 years

If 5 years ago, my age was 18 years, then what is my present age?

• 23 years

• 18 years

• 13 years

If 10 years ago, my age was 20 years, then what will be my age after 2 years?

• 20 years

• 22 years

• 32 years