3r+13.12=3.14*2r

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Solution for 3r+13.12=3.14*2r equation: 


Simplifying
3r + 13.12 = 3.14 * 2r

Reorder the terms:
13.12 + 3r = 3.14 * 2r

Multiply 3.14 * 2
13.12 + 3r = 6.28r

Solving
13.12 + 3r = 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.
13.12 + 3r + -6.28r = 6.28r + -6.28r

Combine like terms: 3r + -6.28r = -3.28r
13.12 + -3.28r = 6.28r + -6.28r

Combine like terms: 6.28r + -6.28r = 0.00
13.12 + -3.28r = 0.00

Add '-13.12' to each side of the equation.
13.12 + -13.12 + -3.28r = 0.00 + -13.12

Combine like terms: 13.12 + -13.12 = 0.00
0.00 + -3.28r = 0.00 + -13.12
-3.28r = 0.00 + -13.12

Combine like terms: 0.00 + -13.12 = -13.12
-3.28r = -13.12

Divide each side by '-3.28'.
r = 4

Simplifying
r = 4

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