Question

Four expressions are shown below:


21x + 6
3(7x + 2)
18x + 9
3(6x + 3)

Which two expressions are equivalent to 3(6x + 2 + x)?
A and D
C and D
A and B
B and C

Answer 1

I think its A and B but C is equivalent too right?

Answer 2

@Jadeishere

Answer 3

but I WANT to give you another medal :)

Answer 4

xD Thanks, but you don't need to, I'm just here to help.

Let me work through this and I'll show you how, kay?

Answer 5

k

Answer 6

Okay!!
3(6x + 2 +x)
18x + 6 + 3x
add the common variables

21x + 6 is the answer to 3(6x + 2 + x)

so obviously, the first one is equal, so we'll move on to solving the next one
3(7x + 2)
3 * 7 = 21
21x + 6

so the first and second
(A and B)

Answer 7

Thanks! And here is our medal you deserve it!