4(1+4r)=100

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Solution for 4(1+4r)=100 equation: 



4(1+4r)=100

We move all terms to the left:

4(1+4r)-(100)=0

We add all the numbers together, and all the variables

4(4r+1)-100=0

We multiply parentheses

16r+4-100=0

We add all the numbers together, and all the variables

16r-96=0

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

16r=96

r=96/16

r=6

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