5(r+4)-7r=

Solution for 5(r+4)-7r= equation:

Simplifying
5(r + 4) + -7r = 0

Reorder the terms:
5(4 + r) + -7r = 0
(4 * 5 + r * 5) + -7r = 0
(20 + 5r) + -7r = 0

Combine like terms: 5r + -7r = -2r
20 + -2r = 0

Solving
20 + -2r = 0

Solving for variable 'r'.

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

Add '-20' to each side of the equation.
20 + -20 + -2r = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -2r = 0 + -20
-2r = 0 + -20

Combine like terms: 0 + -20 = -20
-2r = -20

Divide each side by '-2'.
r = 10

Simplifying
r = 10