7x+9x-9=120+x

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Solution for 7x+9x-9=120+x equation: 



7x+9x-9=120+x

We move all terms to the left:

7x+9x-9-(120+x)=0

We add all the numbers together, and all the variables

7x+9x-(x+120)-9=0

We add all the numbers together, and all the variables

16x-(x+120)-9=0

We get rid of parentheses

16x-x-120-9=0

We add all the numbers together, and all the variables

15x-129=0

We move all terms containing x to the left, all other terms to the right

15x=129

x=129/15

x=8+3/5

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