7r+9r+2r-2=

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


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

Reorder the terms:
-2 + 7r + 9r + 2r = 0

Combine like terms: 7r + 9r = 16r
-2 + 16r + 2r = 0

Combine like terms: 16r + 2r = 18r
-2 + 18r = 0

Solving
-2 + 18r = 0

Solving for variable 'r'.

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

Add '2' to each side of the equation.
-2 + 2 + 18r = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 18r = 0 + 2
18r = 0 + 2

Combine like terms: 0 + 2 = 2
18r = 2

Divide each side by '18'.
r = 0.1111111111

Simplifying
r = 0.1111111111

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