6.28=3.14*2*r

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Solution for 6.28=3.14*2*r equation: 


Simplifying
6.28 = 3.14 * 2r

Multiply 3.14 * 2
6.28 = 6.28r

Solving
6.28 = 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.
6.28 + -6.28r = 6.28r + -6.28r

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

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

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

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

Divide each side by '-6.28'.
r = 1

Simplifying
r = 1

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