200-80=2l+80-80

Solution for 200-80=2l+80-80 equation:

Simplifying
200 + -80 = 2l + 80 + -80

Combine like terms: 200 + -80 = 120
120 = 2l + 80 + -80

Reorder the terms:
120 = 80 + -80 + 2l

Combine like terms: 80 + -80 = 0
120 = 0 + 2l
120 = 2l

Solving
120 = 2l

Solving for variable 'l'.

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

Add '-2l' to each side of the equation.
120 + -2l = 2l + -2l

Combine like terms: 2l + -2l = 0
120 + -2l = 0

Add '-120' to each side of the equation.
120 + -120 + -2l = 0 + -120

Combine like terms: 120 + -120 = 0
0 + -2l = 0 + -120
-2l = 0 + -120

Combine like terms: 0 + -120 = -120
-2l = -120

Divide each side by '-2'.
l = 60

Simplifying
l = 60