-9*(4-7r)-106=0

Solution for -9*(4-7r)-106=0 equation:

Simplifying
-9(4 + -7r) + -106 = 0
(4 * -9 + -7r * -9) + -106 = 0
(-36 + 63r) + -106 = 0

Reorder the terms:
-36 + -106 + 63r = 0

Combine like terms: -36 + -106 = -142
-142 + 63r = 0

Solving
-142 + 63r = 0

Solving for variable 'r'.

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

Add '142' to each side of the equation.
-142 + 142 + 63r = 0 + 142

Combine like terms: -142 + 142 = 0
0 + 63r = 0 + 142
63r = 0 + 142

Combine like terms: 0 + 142 = 142
63r = 142

Divide each side by '63'.
r = 2.253968254

Simplifying
r = 2.253968254