-7+6.5(1+2.5s)=-16.5

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Solution for -7+6.5(1+2.5s)=-16.5 equation: 


Simplifying
-7 + 6.5(1 + 2.5s) = -16.5
-7 + (1 * 6.5 + 2.5s * 6.5) = -16.5
-7 + (6.5 + 16.25s) = -16.5

Combine like terms: -7 + 6.5 = -0.5
-0.5 + 16.25s = -16.5

Solving
-0.5 + 16.25s = -16.5

Solving for variable 's'.

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

Add '0.5' to each side of the equation.
-0.5 + 0.5 + 16.25s = -16.5 + 0.5

Combine like terms: -0.5 + 0.5 = 0.0
0.0 + 16.25s = -16.5 + 0.5
16.25s = -16.5 + 0.5

Combine like terms: -16.5 + 0.5 = -16
16.25s = -16

Divide each side by '16.25'.
s = -0.9846153846

Simplifying
s = -0.9846153846

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