3x+7=10x+2x

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Solution for 3x+7=10x+2x equation: 



3x+7=10x+2x

We move all terms to the left:

3x+7-(10x+2x)=0

We add all the numbers together, and all the variables

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

We get rid of parentheses

3x-12x+7=0

We add all the numbers together, and all the variables

-9x+7=0

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

-9x=-7

x=-7/-9

x=7/9

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