20s-7s-17s-(-11s)-4s-(-18)=-15

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Solution for 20s-7s-17s-(-11s)-4s-(-18)=-15 equation:


Simplifying
20s + -7s + -17s + -1(-11s) + -4s + -1(-18) = -15

Remove parenthesis around (-11s)
20s + -7s + -17s + -1 * -11s + -4s + -1(-18) = -15

Multiply -1 * -11
20s + -7s + -17s + 11s + -4s + -1(-18) = -15

Multiply -1 * -18
20s + -7s + -17s + 11s + -4s + 18 = -15

Reorder the terms:
18 + 20s + -7s + -17s + 11s + -4s = -15

Combine like terms: 20s + -7s = 13s
18 + 13s + -17s + 11s + -4s = -15

Combine like terms: 13s + -17s = -4s
18 + -4s + 11s + -4s = -15

Combine like terms: -4s + 11s = 7s
18 + 7s + -4s = -15

Combine like terms: 7s + -4s = 3s
18 + 3s = -15

Solving
18 + 3s = -15

Solving for variable 's'.

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

Add '-18' to each side of the equation.
18 + -18 + 3s = -15 + -18

Combine like terms: 18 + -18 = 0
0 + 3s = -15 + -18
3s = -15 + -18

Combine like terms: -15 + -18 = -33
3s = -33

Divide each side by '3'.
s = -11

Simplifying
s = -11

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