3(4s+7)=105

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Solution for 3(4s+7)=105 equation: 



3(4s+7)=105

We move all terms to the left:

3(4s+7)-(105)=0

We multiply parentheses

12s+21-105=0

We add all the numbers together, and all the variables

12s-84=0

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

12s=84

s=84/12

s=7

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