8x+21=11x-30

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Solution for 8x+21=11x-30 equation: 



8x+21=11x-30

We move all terms to the left:

8x+21-(11x-30)=0

We get rid of parentheses

8x-11x+30+21=0

We add all the numbers together, and all the variables

-3x+51=0

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

-3x=-51

x=-51/-3

x=+17

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