Question

Which expression is equivalent to 3(−5.5b − 3) − (5b + 7)?

11.5b + 4
−21.5b − 2
−21.5b − 16
11.5b − 16

Answer 1

-21.5b - 16

Explanation:

Simplify the expression

3(−5.5b − 3) − (5b + 7)

-16.5b - 9 - 5b - 7 [Expand the parentheses]

-21.5b - 16 [Add like terms]

This matches the third option.