x+8+12=3x-16

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Solution for x+8+12=3x-16 equation: 



x+8+12=3x-16

We move all terms to the left:

x+8+12-(3x-16)=0

We add all the numbers together, and all the variables

x-(3x-16)+20=0

We get rid of parentheses

x-3x+16+20=0

We add all the numbers together, and all the variables

-2x+36=0

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

-2x=-36

x=-36/-2

x=+18

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