8r-9=-15-5r

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Solution for 8r-9=-15-5r equation:


Simplifying
8r + -9 = -15 + -5r

Reorder the terms:
-9 + 8r = -15 + -5r

Solving
-9 + 8r = -15 + -5r

Solving for variable 'r'.

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

Add '5r' to each side of the equation.
-9 + 8r + 5r = -15 + -5r + 5r

Combine like terms: 8r + 5r = 13r
-9 + 13r = -15 + -5r + 5r

Combine like terms: -5r + 5r = 0
-9 + 13r = -15 + 0
-9 + 13r = -15

Add '9' to each side of the equation.
-9 + 9 + 13r = -15 + 9

Combine like terms: -9 + 9 = 0
0 + 13r = -15 + 9
13r = -15 + 9

Combine like terms: -15 + 9 = -6
13r = -6

Divide each side by '13'.
r = -0.4615384615

Simplifying
r = -0.4615384615

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