7(r+9)-2r=

Solution for 7(r+9)-2r= equation:

Simplifying
7(r + 9) + -2r = 0

Reorder the terms:
7(9 + r) + -2r = 0
(9 * 7 + r * 7) + -2r = 0
(63 + 7r) + -2r = 0

Combine like terms: 7r + -2r = 5r
63 + 5r = 0

Solving
63 + 5r = 0

Solving for variable 'r'.

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

Add '-63' to each side of the equation.
63 + -63 + 5r = 0 + -63

Combine like terms: 63 + -63 = 0
0 + 5r = 0 + -63
5r = 0 + -63

Combine like terms: 0 + -63 = -63
5r = -63

Divide each side by '5'.
r = -12.6

Simplifying
r = -12.6