Mathematics Help 10 <span title="Points!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!?">Points!!!!!!!!!!!!!!!!!!!...</span>

Question

Simplify the expression by combining like terms.

3(a+b)+3(b+a)

Answer 1

3(a+b)+3(b+a)

=3a+3b+3b+3a

=6a+6b

=6(a+b)answer  

Answer 2

3(a+b)+3(b+a)

3a + 3b + 3b + 3a

6a + 6b

6a = -6b

divide by 6 on both sides

a = -b

Answer 3

(a+b)8

like terms=(a+b) and (b+a)

so you do two of those:

2(a+b)

then you have 2 3x you have to do (also like terms)

so that is 6x

you have to do a 6x now and a 2x. 6+2=8 so you have to do an 8x

aka: 3x you do twice

3x2=6

you have to do a 6x now and a 2x. 6+2=8 so you have to do an 8x instead of a 6x and a 2x.

hope that helps. you are not trying to solve the problem, just change it so it asks the same thing and has the same answer, but you are not saying a+b twice or x3 twice or anything twice.