15+9r-2r=1

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Solution for 15+9r-2r=1 equation: 


Simplifying
15 + 9r + -2r = 1

Combine like terms: 9r + -2r = 7r
15 + 7r = 1

Solving
15 + 7r = 1

Solving for variable 'r'.

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

Add '-15' to each side of the equation.
15 + -15 + 7r = 1 + -15

Combine like terms: 15 + -15 = 0
0 + 7r = 1 + -15
7r = 1 + -15

Combine like terms: 1 + -15 = -14
7r = -14

Divide each side by '7'.
r = -2

Simplifying
r = -2

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