Question

Which expression is equivlent to 3n + 2(1-4n)

a 2-n
b 2-5n
c 2+11n
d 2-11n
Samuel chose a how did he get that answer.

Answer 1

3n + 2 -8n
= 2 - 5n

B is correct answer

Answer 2

3n + 2(1 - 4n)

The first thing you want to do is clear the parentheses.

3n + 2 - 8n

We now combine like terms.

3n - 8n + 2

-5n + 2

Rewrite as 2 - 5n.

Answer is b not a.