-5s-(-15s)=-20

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Solution for -5s-(-15s)=-20 equation: 


Simplifying
-5s + -1(-15s) = -20

Remove parenthesis around (-15s)
-5s + -1 * -15s = -20

Multiply -1 * -15
-5s + 15s = -20

Combine like terms: -5s + 15s = 10s
10s = -20

Solving
10s = -20

Solving for variable 's'.

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

Divide each side by '10'.
s = -2

Simplifying
s = -2

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