Question

Write the expression that is equivalent to the following: (1+7x)+(8x+7)

Answer 1

15x + 8

Explanation:

(1 + 7x ) + (8x + 7 ) ← remove parenthesis

since both parenthesis are being multiplied by 1

= 1 + 7x + 8x + 7 ← collect like terms

= (7x + 8x ) + (1 + 7 )

= 15x + 8