11-r=12

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Solution for 11-r=12 equation: 


Simplifying
11 + -1r = 12

Solving
11 + -1r = 12

Solving for variable 'r'.

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

Add '-11' to each side of the equation.
11 + -11 + -1r = 12 + -11

Combine like terms: 11 + -11 = 0
0 + -1r = 12 + -11
-1r = 12 + -11

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

Divide each side by '-1'.
r = -1

Simplifying
r = -1

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