# Math 8R - help!!!!!!!

posted by .

Combining Like Terms
1. 3a + a = 16
2. 9x - 3x = 30
3. 5w + 3w = 24

I really need help with this, can you at least do one or two for me so I can do the other problem.

• Math 8R - help!!!!!!! -

1.
3a + a = 16
4a = 16
a = 16/4
a = 4

2.
9x - 3x = 30
6x = 30
x = ?

• Math 8R - help!!!!!!! -

how did you got 4 for #1????

and 6 for #2????

• Math 8R - help!!!!!!! -

3a + a = 4a

9x - 3x = 6x

• Math 8R - help!!!!!!! -

can you please explain to me for #1
and for #2 is the answer is 5???

• Math 8R - help!!!!!!! -

but is my asnwer is correct for #2?

• Math 8R - help!!!!!!! -

because 30/5 is 6

• 2 is correct Laruen -

Yes

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