12r+18r=-15

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Solution for 12r+18r=-15 equation: 


Simplifying
12r + 18r = -15

Combine like terms: 12r + 18r = 30r
30r = -15

Solving
30r = -15

Solving for variable 'r'.

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

Divide each side by '30'.
r = -0.5

Simplifying
r = -0.5

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