r+3+9r-9=

Solution for r+3+9r-9= equation:

Simplifying
r + 3 + 9r + -9 = 0

Reorder the terms:
3 + -9 + r + 9r = 0

Combine like terms: 3 + -9 = -6
-6 + r + 9r = 0

Combine like terms: r + 9r = 10r
-6 + 10r = 0

Solving
-6 + 10r = 0

Solving for variable 'r'.

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

Add '6' to each side of the equation.
-6 + 6 + 10r = 0 + 6

Combine like terms: -6 + 6 = 0
0 + 10r = 0 + 6
10r = 0 + 6

Combine like terms: 0 + 6 = 6
10r = 6

Divide each side by '10'.
r = 0.6

Simplifying
r = 0.6