15=8r+3+r

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Solution for 15=8r+3+r equation:


Simplifying
15 = 8r + 3 + r

Reorder the terms:
15 = 3 + 8r + r

Combine like terms: 8r + r = 9r
15 = 3 + 9r

Solving
15 = 3 + 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.
15 + -9r = 3 + 9r + -9r

Combine like terms: 9r + -9r = 0
15 + -9r = 3 + 0
15 + -9r = 3

Add '-15' to each side of the equation.
15 + -15 + -9r = 3 + -15

Combine like terms: 15 + -15 = 0
0 + -9r = 3 + -15
-9r = 3 + -15

Combine like terms: 3 + -15 = -12
-9r = -12

Divide each side by '-9'.
r = 1.333333333

Simplifying
r = 1.333333333

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