S+9=7

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Solution for S+9=7 equation: 


Simplifying
S + 9 = 7

Reorder the terms:
9 + S = 7

Solving
9 + S = 7

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 + S = 7 + -9

Combine like terms: 9 + -9 = 0
0 + S = 7 + -9
S = 7 + -9

Combine like terms: 7 + -9 = -2
S = -2

Simplifying
S = -2

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