20s-13+7=18s+8

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Solution for 20s-13+7=18s+8 equation: 



20s-13+7=18s+8

We move all terms to the left:

20s-13+7-(18s+8)=0

We add all the numbers together, and all the variables

20s-(18s+8)-6=0

We get rid of parentheses

20s-18s-8-6=0

We add all the numbers together, and all the variables

2s-14=0

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

2s=14

s=14/2

s=7

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