s*7-45=109

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Solution for s*7-45=109 equation: 



s*7-45=109

We move all terms to the left:

s*7-45-(109)=0

We add all the numbers together, and all the variables

s*7-154=0

Wy multiply elements

7s-154=0

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

7s=154

s=154/7

s=22

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