7.12=3.14r

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Solution for 7.12=3.14r equation: 


Simplifying
7.12 = 3.14r

Solving
7.12 = 3.14r

Solving for variable 'r'.

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

Add '-3.14r' to each side of the equation.
7.12 + -3.14r = 3.14r + -3.14r

Combine like terms: 3.14r + -3.14r = 0.00
7.12 + -3.14r = 0.00

Add '-7.12' to each side of the equation.
7.12 + -7.12 + -3.14r = 0.00 + -7.12

Combine like terms: 7.12 + -7.12 = 0.00
0.00 + -3.14r = 0.00 + -7.12
-3.14r = 0.00 + -7.12

Combine like terms: 0.00 + -7.12 = -7.12
-3.14r = -7.12

Divide each side by '-3.14'.
r = 2.267515924

Simplifying
r = 2.267515924

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