8r+9r=-21

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Solution for 8r+9r=-21 equation: 


Simplifying
8r + 9r = -21

Combine like terms: 8r + 9r = 17r
17r = -21

Solving
17r = -21

Solving for variable 'r'.

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

Divide each side by '17'.
r = -1.235294118

Simplifying
r = -1.235294118

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