13=9r+8

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Solution for 13=9r+8 equation:


Simplifying
13 = 9r + 8

Reorder the terms:
13 = 8 + 9r

Solving
13 = 8 + 9r

Solving for variable 'r'.

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

Add '-9r' to each side of the equation.
13 + -9r = 8 + 9r + -9r

Combine like terms: 9r + -9r = 0
13 + -9r = 8 + 0
13 + -9r = 8

Add '-13' to each side of the equation.
13 + -13 + -9r = 8 + -13

Combine like terms: 13 + -13 = 0
0 + -9r = 8 + -13
-9r = 8 + -13

Combine like terms: 8 + -13 = -5
-9r = -5

Divide each side by '-9'.
r = 0.5555555556

Simplifying
r = 0.5555555556

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