9s-12=-40+2s

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Solution for 9s-12=-40+2s equation:


Simplifying
9s + -12 = -40 + 2s

Reorder the terms:
-12 + 9s = -40 + 2s

Solving
-12 + 9s = -40 + 2s

Solving for variable 's'.

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

Add '-2s' to each side of the equation.
-12 + 9s + -2s = -40 + 2s + -2s

Combine like terms: 9s + -2s = 7s
-12 + 7s = -40 + 2s + -2s

Combine like terms: 2s + -2s = 0
-12 + 7s = -40 + 0
-12 + 7s = -40

Add '12' to each side of the equation.
-12 + 12 + 7s = -40 + 12

Combine like terms: -12 + 12 = 0
0 + 7s = -40 + 12
7s = -40 + 12

Combine like terms: -40 + 12 = -28
7s = -28

Divide each side by '7'.
s = -4

Simplifying
s = -4

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