7s-9=15+s

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Solution for 7s-9=15+s equation:


Simplifying
7s + -9 = 15 + s

Reorder the terms:
-9 + 7s = 15 + s

Solving
-9 + 7s = 15 + s

Solving for variable 's'.

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

Add '-1s' to each side of the equation.
-9 + 7s + -1s = 15 + s + -1s

Combine like terms: 7s + -1s = 6s
-9 + 6s = 15 + s + -1s

Combine like terms: s + -1s = 0
-9 + 6s = 15 + 0
-9 + 6s = 15

Add '9' to each side of the equation.
-9 + 9 + 6s = 15 + 9

Combine like terms: -9 + 9 = 0
0 + 6s = 15 + 9
6s = 15 + 9

Combine like terms: 15 + 9 = 24
6s = 24

Divide each side by '6'.
s = 4

Simplifying
s = 4

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