18.5=-3(2.5s+6)

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Solution for 18.5=-3(2.5s+6) equation: 


Simplifying
18.5 = -3(2.5s + 6)

Reorder the terms:
18.5 = -3(6 + 2.5s)
18.5 = (6 * -3 + 2.5s * -3)
18.5 = (-18 + -7.5s)

Solving
18.5 = -18 + -7.5s

Solving for variable 's'.

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

Add '7.5s' to each side of the equation.
18.5 + 7.5s = -18 + -7.5s + 7.5s

Combine like terms: -7.5s + 7.5s = 0.0
18.5 + 7.5s = -18 + 0.0
18.5 + 7.5s = -18

Add '-18.5' to each side of the equation.
18.5 + -18.5 + 7.5s = -18 + -18.5

Combine like terms: 18.5 + -18.5 = 0.0
0.0 + 7.5s = -18 + -18.5
7.5s = -18 + -18.5

Combine like terms: -18 + -18.5 = -36.5
7.5s = -36.5

Divide each side by '7.5'.
s = -4.866666667

Simplifying
s = -4.866666667

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