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

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

anonymous · Answer

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

anonymous · Answer

@Jadeishere

anonymous · Answer

but I WANT to give you another medal :)

jadeishere · Answer

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?

anonymous · Answer

k

jadeishere · Answer

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)

anonymous · Answer

Thanks! And here is our medal you deserve it!