3+1.5s+s=-12

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Solution for 3+1.5s+s=-12 equation: 


Simplifying
3 + 1.5s + s = -12

Combine like terms: 1.5s + s = 2.5s
3 + 2.5s = -12

Solving
3 + 2.5s = -12

Solving for variable 's'.

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

Add '-3' to each side of the equation.
3 + -3 + 2.5s = -12 + -3

Combine like terms: 3 + -3 = 0
0 + 2.5s = -12 + -3
2.5s = -12 + -3

Combine like terms: -12 + -3 = -15
2.5s = -15

Divide each side by '2.5'.
s = -6

Simplifying
s = -6

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