3r+9r+7r-1=

Solution for 3r+9r+7r-1= equation:

Simplifying
3r + 9r + 7r + -1 = 0

Reorder the terms:
-1 + 3r + 9r + 7r = 0

Combine like terms: 3r + 9r = 12r
-1 + 12r + 7r = 0

Combine like terms: 12r + 7r = 19r
-1 + 19r = 0

Solving
-1 + 19r = 0

Solving for variable 'r'.

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

Add '1' to each side of the equation.
-1 + 1 + 19r = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 19r = 0 + 1
19r = 0 + 1

Combine like terms: 0 + 1 = 1
19r = 1

Divide each side by '19'.
r = 0.05263157895

Simplifying
r = 0.05263157895