.18(m-20)+1.20=c

Solution for .18(m-20)+1.20=c equation:

Simplifying
0.18(m + -20) + 1.20 = c

Reorder the terms:
0.18(-20 + m) + 1.20 = c
(-20 * 0.18 + m * 0.18) + 1.20 = c
(-3.6 + 0.18m) + 1.20 = c

Reorder the terms:
-3.6 + 1.20 + 0.18m = c

Combine like terms: -3.6 + 1.20 = -2.4
-2.4 + 0.18m = c

Solving
-2.4 + 0.18m = c

Solving for variable 'm'.

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

Add '2.4' to each side of the equation.
-2.4 + 2.4 + 0.18m = 2.4 + c

Combine like terms: -2.4 + 2.4 = 0.0
0.0 + 0.18m = 2.4 + c
0.18m = 2.4 + c

Divide each side by '0.18'.
m = 13.33333333 + 5.555555556c

Simplifying
m = 13.33333333 + 5.555555556c