42=-9r+-3=

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Solution for 42=-9r+-3= equation: 



42=-9r+-3=

We move all terms to the left:

42-(-9r+-3)=0

We add all the numbers together, and all the variables

-(-9r-3)+42=0

We get rid of parentheses

9r+3+42=0

We add all the numbers together, and all the variables

9r+45=0

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

9r=-45

r=-45/9

r=-5

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