130=2s+21

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Solution for 130=2s+21 equation: 



130=2s+21

We move all terms to the left:

130-(2s+21)=0

We get rid of parentheses

-2s-21+130=0

We add all the numbers together, and all the variables

-2s+109=0

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

-2s=-109

s=-109/-2

s=54+1/2

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