s+s+15=55

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Solution for s+s+15=55 equation:


Simplifying
s + s + 15 = 55

Reorder the terms:
15 + s + s = 55

Combine like terms: s + s = 2s
15 + 2s = 55

Solving
15 + 2s = 55

Solving for variable 's'.

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

Add '-15' to each side of the equation.
15 + -15 + 2s = 55 + -15

Combine like terms: 15 + -15 = 0
0 + 2s = 55 + -15
2s = 55 + -15

Combine like terms: 55 + -15 = 40
2s = 40

Divide each side by '2'.
s = 20

Simplifying
s = 20

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