8x-21=5x+12

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Solution for 8x-21=5x+12 equation: 



8x-21=5x+12

We move all terms to the left:

8x-21-(5x+12)=0

We get rid of parentheses

8x-5x-12-21=0

We add all the numbers together, and all the variables

3x-33=0

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

3x=33

x=33/3

x=11

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