3x+7=12x+8

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Solution for 3x+7=12x+8 equation: 



3x+7=12x+8

We move all terms to the left:

3x+7-(12x+8)=0

We get rid of parentheses

3x-12x-8+7=0

We add all the numbers together, and all the variables

-9x-1=0

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

-9x=1

x=1/-9

x=-1/9

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