Question

Rewrite each of the following examples in the each form a (b + c).

(1) 15 × 3 + 15 × 7
(2) 9 × 38 + 9 × 12
(3) 125 ×69 + 125 × 31

Answer 1

(1) a × b + a × c = a (b + c)
∴ 15 × 3 + 15 × 7 = 15 (3 + 7)

(2) a × b + a × c = a (b + c)
∴ 9 × 38 + 9 × 12 = 9 (38 + 12)

(3) a × b + a × c = a (b + c)
∴ 125 ×69 + 125 × 31 = 125 (69 + 31)