7.5s-6-8s=20.5

Solution for 7.5s-6-8s=20.5 equation:

Simplifying
7.5s + -6 + -8s = 20.5

Reorder the terms:
-6 + 7.5s + -8s = 20.5

Combine like terms: 7.5s + -8s = -0.5s
-6 + -0.5s = 20.5

Solving
-6 + -0.5s = 20.5

Solving for variable 's'.

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

Add '6' to each side of the equation.
-6 + 6 + -0.5s = 20.5 + 6

Combine like terms: -6 + 6 = 0
0 + -0.5s = 20.5 + 6
-0.5s = 20.5 + 6

Combine like terms: 20.5 + 6 = 26.5
-0.5s = 26.5

Divide each side by '-0.5'.
s = -53

Simplifying
s = -53