3(7x+8)=129

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Solution for 3(7x+8)=129 equation: 



3(7x+8)=129

We move all terms to the left:

3(7x+8)-(129)=0

We multiply parentheses

21x+24-129=0

We add all the numbers together, and all the variables

21x-105=0

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

21x=105

x=105/21

x=5

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