412=28+12r

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Solution for 412=28+12r equation:


Simplifying
412 = 28 + 12r

Solving
412 = 28 + 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
412 + -12r = 28 + 12r + -12r

Combine like terms: 12r + -12r = 0
412 + -12r = 28 + 0
412 + -12r = 28

Add '-412' to each side of the equation.
412 + -412 + -12r = 28 + -412

Combine like terms: 412 + -412 = 0
0 + -12r = 28 + -412
-12r = 28 + -412

Combine like terms: 28 + -412 = -384
-12r = -384

Divide each side by '-12'.
r = 32

Simplifying
r = 32

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