7s+8s=90

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Solution for 7s+8s=90 equation: 


Simplifying
7s + 8s = 90

Combine like terms: 7s + 8s = 15s
15s = 90

Solving
15s = 90

Solving for variable 's'.

Move all terms containing s to the left, all other terms to the right.

Divide each side by '15'.
s = 6

Simplifying
s = 6

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