6r+9r=-4

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Solution for 6r+9r=-4 equation: 



6r+9r=-4

We move all terms to the left:

6r+9r-(-4)=0

We add all the numbers together, and all the variables

15r+4=0

We move all terms containing r to the left, all other terms to the right

15r=-4

r=-4/15

r=-4/15

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