-7s+12=-9

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Solution for -7s+12=-9 equation: 


Simplifying
-7s + 12 = -9

Reorder the terms:
12 + -7s = -9

Solving
12 + -7s = -9

Solving for variable 's'.

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

Add '-12' to each side of the equation.
12 + -12 + -7s = -9 + -12

Combine like terms: 12 + -12 = 0
0 + -7s = -9 + -12
-7s = -9 + -12

Combine like terms: -9 + -12 = -21
-7s = -21

Divide each side by '-7'.
s = 3

Simplifying
s = 3

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