8x-12=11x-21

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Solution for 8x-12=11x-21 equation: 



8x-12=11x-21

We move all terms to the left:

8x-12-(11x-21)=0

We get rid of parentheses

8x-11x+21-12=0

We add all the numbers together, and all the variables

-3x+9=0

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

-3x=-9

x=-9/-3

x=+3

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