2(s-78)=42

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Solution for 2(s-78)=42 equation: 



2(s-78)=42

We move all terms to the left:

2(s-78)-(42)=0

We multiply parentheses

2s-156-42=0

We add all the numbers together, and all the variables

2s-198=0

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

2s=198

s=198/2

s=99

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