8.5=2(3.14)r

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Solution for 8.5=2(3.14)r equation: 


Simplifying
8.5 = 2(3.14) * r

Multiply 2 * 3.14
8.5 = 6.28r

Solving
8.5 = 6.28r

Solving for variable 'r'.

Move all terms containing r to the left, all other terms to the right.

Add '-6.28r' to each side of the equation.
8.5 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
8.5 + -6.28r = 0.00

Add '-8.5' to each side of the equation.
8.5 + -8.5 + -6.28r = 0.00 + -8.5

Combine like terms: 8.5 + -8.5 = 0.0
0.0 + -6.28r = 0.00 + -8.5
-6.28r = 0.00 + -8.5

Combine like terms: 0.00 + -8.5 = -8.5
-6.28r = -8.5

Divide each side by '-6.28'.
r = 1.353503185

Simplifying
r = 1.353503185

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