5s-9+7s=87

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Solution for 5s-9+7s=87 equation:


Simplifying
5s + -9 + 7s = 87

Reorder the terms:
-9 + 5s + 7s = 87

Combine like terms: 5s + 7s = 12s
-9 + 12s = 87

Solving
-9 + 12s = 87

Solving for variable 's'.

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

Add '9' to each side of the equation.
-9 + 9 + 12s = 87 + 9

Combine like terms: -9 + 9 = 0
0 + 12s = 87 + 9
12s = 87 + 9

Combine like terms: 87 + 9 = 96
12s = 96

Divide each side by '12'.
s = 8

Simplifying
s = 8

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