Question

LII
Solve each of the following equation and verify the answer
1. x + 5 = 12
5. 3x - 5 = 13
9. 5x – 3 = x +17​

Answer 1

Answer:

1.

Subtracting -5 from both sides

x + 5 – 5 = 12 – 5

x = 7

5.

Adding 5 to both sides

3x – 5 + 5 = 13 + 5

3x = 18

x = 18 / 3

x = 6

9.

Transposing x to LHS and -3 to RHS

5x – x = 17 + 3

4x = 20

x = 20 / 4

x = 5