3(5x+7)=129

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Solution for 3(5x+7)=129 equation: 



3(5x+7)=129

We move all terms to the left:

3(5x+7)-(129)=0

We multiply parentheses

15x+21-129=0

We add all the numbers together, and all the variables

15x-108=0

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

15x=108

x=108/15

x=7+1/5

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