9s-15=20+2s

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Solution for 9s-15=20+2s equation:


Simplifying
9s + -15 = 20 + 2s

Reorder the terms:
-15 + 9s = 20 + 2s

Solving
-15 + 9s = 20 + 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.
-15 + 9s + -2s = 20 + 2s + -2s

Combine like terms: 9s + -2s = 7s
-15 + 7s = 20 + 2s + -2s

Combine like terms: 2s + -2s = 0
-15 + 7s = 20 + 0
-15 + 7s = 20

Add '15' to each side of the equation.
-15 + 15 + 7s = 20 + 15

Combine like terms: -15 + 15 = 0
0 + 7s = 20 + 15
7s = 20 + 15

Combine like terms: 20 + 15 = 35
7s = 35

Divide each side by '7'.
s = 5

Simplifying
s = 5

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