31.4=2r*3.14

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Solution for 31.4=2r*3.14 equation:


Simplifying
31.4 = 2r * 3.14

Reorder the terms for easier multiplication:
31.4 = 2 * 3.14r

Multiply 2 * 3.14
31.4 = 6.28r

Solving
31.4 = 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.
31.4 + -6.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
31.4 + -6.28r = 0.00

Add '-31.4' to each side of the equation.
31.4 + -31.4 + -6.28r = 0.00 + -31.4

Combine like terms: 31.4 + -31.4 = 0.0
0.0 + -6.28r = 0.00 + -31.4
-6.28r = 0.00 + -31.4

Combine like terms: 0.00 + -31.4 = -31.4
-6.28r = -31.4

Divide each side by '-6.28'.
r = 5

Simplifying
r = 5

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