8x+12=7x-21

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Solution for 8x+12=7x-21 equation: 



8x+12=7x-21

We move all terms to the left:

8x+12-(7x-21)=0

We get rid of parentheses

8x-7x+21+12=0

We add all the numbers together, and all the variables

x+33=0

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

x=-33

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