7(30)+4r=64

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Solution for 7(30)+4r=64 equation: 



7(30)+4r=64

We move all terms to the left:

7(30)+4r-(64)=0

We add all the numbers together, and all the variables

4r+666=0

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

4r=-666

r=-666/4

r=-166+1/2

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