12+1r=r-8

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Solution for 12+1r=r-8 equation:


Simplifying
12 + 1r = r + -8

Reorder the terms:
12 + 1r = -8 + r

Solving
12 + 1r = -8 + r

Solving for variable 'r'.

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

Add '-1r' to each side of the equation.
12 + 1r + -1r = -8 + r + -1r

Combine like terms: 1r + -1r = 0
12 + 0 = -8 + r + -1r
12 = -8 + r + -1r

Combine like terms: r + -1r = 0
12 = -8 + 0
12 = -8

Add '-12' to each side of the equation.
12 + -12 = -8 + -12

Combine like terms: 12 + -12 = 0
0 = -8 + -12

Combine like terms: -8 + -12 = -20
0 = -20

Simplifying
0 = -20

Combine like terms: 0 + 20 = 20
20 = -20 + 20

Combine like terms: -20 + 20 = 0
20 = 0

The solution to this equation could not be determined.

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