-9+9r=-4r

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Solution for -9+9r=-4r equation:


Simplifying
-9 + 9r = -4r

Solving
-9 + 9r = -4r

Solving for variable 'r'.

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

Add '4r' to each side of the equation.
-9 + 9r + 4r = -4r + 4r

Combine like terms: 9r + 4r = 13r
-9 + 13r = -4r + 4r

Combine like terms: -4r + 4r = 0
-9 + 13r = 0

Add '9' to each side of the equation.
-9 + 9 + 13r = 0 + 9

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

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

Divide each side by '13'.
r = 0.6923076923

Simplifying
r = 0.6923076923

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