Question

Which expression is equivalent to 2 (14x-37+28x+12.2-5y-17.5)?

A. 84x-16y-10.6
B. 28x-6y-10.6
C. 42x-8y-5.3
D 84x-16y-5.3

Answer 1

A. 84x - 16y - 10.6

Step-by-step explanation:

`\sf \rightarrow 2(14x-3y+28x+12.2-5y-17.5)`

`\sf \rightarrow 2 (42x-8y-5.3)`

apply distributive method: a(b + c) = ab + ac

`\sf \rightarrow 2 (42x) -2(8y)-2(5.3)`

`\sf \rightarrow 84x -16y-10.6`