3x+10=7x-30

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Solution for 3x+10=7x-30 equation: 



3x+10=7x-30

We move all terms to the left:

3x+10-(7x-30)=0

We get rid of parentheses

3x-7x+30+10=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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