3x-28=12+7x

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Solution for 3x-28=12+7x equation: 



3x-28=12+7x

We move all terms to the left:

3x-28-(12+7x)=0

We add all the numbers together, and all the variables

3x-(7x+12)-28=0

We get rid of parentheses

3x-7x-12-28=0

We add all the numbers together, and all the variables

-4x-40=0

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

-4x=40

x=40/-4

x=-10

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