.75-20=s

Solution for .75-20=s equation:

Simplifying
0.75 + -20 = s

Combine like terms: 0.75 + -20 = -19.25
-19.25 = s

Solving
-19.25 = s

Solving for variable 's'.

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

Add '-1s' to each side of the equation.
-19.25 + -1s = s + -1s

Combine like terms: s + -1s = 0
-19.25 + -1s = 0

Add '19.25' to each side of the equation.
-19.25 + 19.25 + -1s = 0 + 19.25

Combine like terms: -19.25 + 19.25 = 0.00
0.00 + -1s = 0 + 19.25
-1s = 0 + 19.25

Combine like terms: 0 + 19.25 = 19.25
-1s = 19.25

Divide each side by '-1'.
s = -19.25

Simplifying
s = -19.25