144=7r-5r

Solution for 144=7r-5r equation:

Simplifying
144 = 7r + -5r

Combine like terms: 7r + -5r = 2r
144 = 2r

Solving
144 = 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
144 + -2r = 2r + -2r

Combine like terms: 2r + -2r = 0
144 + -2r = 0

Add '-144' to each side of the equation.
144 + -144 + -2r = 0 + -144

Combine like terms: 144 + -144 = 0
0 + -2r = 0 + -144
-2r = 0 + -144

Combine like terms: 0 + -144 = -144
-2r = -144

Divide each side by '-2'.
r = 72

Simplifying
r = 72