8x-9=7x+12

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



8x-9=7x+12

We move all terms to the left:

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

We get rid of parentheses

8x-7x-12-9=0

We add all the numbers together, and all the variables

x-21=0

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

x=21

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