(3x+4)+(7x-34)=90

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Solution for (3x+4)+(7x-34)=90 equation: 



(3x+4)+(7x-34)=90

We move all terms to the left:

(3x+4)+(7x-34)-(90)=0

We get rid of parentheses

3x+7x+4-34-90=0

We add all the numbers together, and all the variables

10x-120=0

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

10x=120

x=120/10

x=12

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