7x-9=99-5x

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Solution for 7x-9=99-5x equation: 



7x-9=99-5x

We move all terms to the left:

7x-9-(99-5x)=0

We add all the numbers together, and all the variables

7x-(-5x+99)-9=0

We get rid of parentheses

7x+5x-99-9=0

We add all the numbers together, and all the variables

12x-108=0

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

12x=108

x=108/12

x=9

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