18=7s+2s

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Solution for 18=7s+2s equation:


Simplifying
18 = 7s + 2s

Combine like terms: 7s + 2s = 9s
18 = 9s

Solving
18 = 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.
18 + -9s = 9s + -9s

Combine like terms: 9s + -9s = 0
18 + -9s = 0

Add '-18' to each side of the equation.
18 + -18 + -9s = 0 + -18

Combine like terms: 18 + -18 = 0
0 + -9s = 0 + -18
-9s = 0 + -18

Combine like terms: 0 + -18 = -18
-9s = -18

Divide each side by '-9'.
s = 2

Simplifying
s = 2

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