Question

Simplify 3(5y + 6) - 4.
A. 11y + 14
B. 11y + 18
C. 15y + 14
D. 15y + 2

Answer 1

3(5y + 6) - 4 ( by distributing 3 )
= 15y + 18 - 4
= 15y + 14

Answer 2

3(5y + 6) - 4

First, distribute so that it will make the solving easier.

`(3)(5y) + (3)(6) - 4`
Second, since parentheses indicate multiplication, '3 × 5y = 15y'.

`15y + (3)(6) - 4`
Third, multiply '3 × 6' to get '18'.

`15y + 18 - 4`
Fourth, subtract '18 - 4' to get '14'.

`15y + 14`

Answer: C) 15y + 14