7s-7=9+9s

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


Simplifying
7s + -7 = 9 + 9s

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

Solving
-7 + 7s = 9 + 9s

Solving for variable 's'.

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

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

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

Combine like terms: 9s + -9s = 0
-7 + -2s = 9 + 0
-7 + -2s = 9

Add '7' to each side of the equation.
-7 + 7 + -2s = 9 + 7

Combine like terms: -7 + 7 = 0
0 + -2s = 9 + 7
-2s = 9 + 7

Combine like terms: 9 + 7 = 16
-2s = 16

Divide each side by '-2'.
s = -8

Simplifying
s = -8

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