9+8x=12+7x

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Solution for 9+8x=12+7x equation: 



9+8x=12+7x

We move all terms to the left:

9+8x-(12+7x)=0

We add all the numbers together, and all the variables

8x-(7x+12)+9=0

We get rid of parentheses

8x-7x-12+9=0

We add all the numbers together, and all the variables

x-3=0

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

x=3

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