20=2(3.14r)

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Solution for 20=2(3.14r) equation:


Simplifying
20 = 2(3.14r)

Remove parenthesis around (3.14r)
20 = 2 * 3.14r

Multiply 2 * 3.14
20 = 6.28r

Solving
20 = 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.
20 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
20 + -6.28r = 0.00

Add '-20' to each side of the equation.
20 + -20 + -6.28r = 0.00 + -20

Combine like terms: 20 + -20 = 0
0 + -6.28r = 0.00 + -20
-6.28r = 0.00 + -20

Combine like terms: 0.00 + -20 = -20
-6.28r = -20

Divide each side by '-6.28'.
r = 3.184713376

Simplifying
r = 3.184713376

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