Question

Solve each of the following equations
(a) 7x = 63 (b) 3 x2 = 12



(c) 2x + 6 = 30 – 4x (d) 8x – 12 = 3 (x + 6)

Answer 1

7x = 63

x = 63/7 = 9

3 x² = 12

x² = 12/3

x² = 4

x = 2

2x + 6 = 30 – 4x

2x + 4x = 30 - 6

6x = 24

x = 4

8x – 12 = 3 (x + 6)

8x - 12 = 3x + 18

5x = 30

x = 6