Respuesta :

Answer:

I'm pretty sure the answer to number one is 12g.

Step-by-step explanation:

To combine like terms, you combine all of the same variables.

For example, if you have 5x+7y+5x, you would combine like terms to make 10x+7x.

So for your first problem, we know that the combined like term is 15g. We know that one of the numbers combined was 3g. With that knowledge, you can subtract 15g-3g and get 12g.

I hope this makes sense, and helps you answer your other questions!
A- a+12
B- a-15
C- a(4+7)
2- 5(2n-4)
10n -20 does NOT equal to 10n-4

12g
11d
6b
7k
9m, 3n
4r, 14r
6.5x
5.4c
(The next page is the same)

11a-5c+3a = 14a -15c
16+2b-7b= 16-5b
4d-8-10d= -6d-8
21g-6f-8g= 13g-6f
6t+9s-10s-2t= 4t-1s
18r+7q-11r+13q= 7r+20q
12w-6+12-8= 12w-2
15d+3d-7d-d= 10d
4x^2+14x^2-1x= 211x ( 16x+196-1)
15x+2.5 = 3(15x+2.5) ( there are 3 sides to a triangle)
(3x-8)+(2x+4)+2(3x-1)




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