2(3.14)(r)=157

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Solution for 2(3.14)(r)=157 equation: 



2(3.14)(r)=157

We move all terms to the left:

2(3.14)(r)-(157)=0

We multiply parentheses

6.28r-157=0

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

6.28r=157

r=157/6.28

r=25

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