8x+12-10x=-30

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Solution for 8x+12-10x=-30 equation: 



8x+12-10x=-30

We move all terms to the left:

8x+12-10x-(-30)=0

We add all the numbers together, and all the variables

-2x+42=0

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

-2x=-42

x=-42/-2

x=+21

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