10r+12-11r=3r-12-12r

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Solution for 10r+12-11r=3r-12-12r equation: 


Simplifying
10r + 12 + -11r = 3r + -12 + -12r

Reorder the terms:
12 + 10r + -11r = 3r + -12 + -12r

Combine like terms: 10r + -11r = -1r
12 + -1r = 3r + -12 + -12r

Reorder the terms:
12 + -1r = -12 + 3r + -12r

Combine like terms: 3r + -12r = -9r
12 + -1r = -12 + -9r

Solving
12 + -1r = -12 + -9r

Solving for variable 'r'.

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

Add '9r' to each side of the equation.
12 + -1r + 9r = -12 + -9r + 9r

Combine like terms: -1r + 9r = 8r
12 + 8r = -12 + -9r + 9r

Combine like terms: -9r + 9r = 0
12 + 8r = -12 + 0
12 + 8r = -12

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

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

Combine like terms: -12 + -12 = -24
8r = -24

Divide each side by '8'.
r = -3

Simplifying
r = -3

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