3x+76=7x-8

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Solution for 3x+76=7x-8 equation: 



3x+76=7x-8

We move all terms to the left:

3x+76-(7x-8)=0

We get rid of parentheses

3x-7x+8+76=0

We add all the numbers together, and all the variables

-4x+84=0

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

-4x=-84

x=-84/-4

x=+21

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