-12-r=-17.2

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Solution for -12-r=-17.2 equation: 


Simplifying
-12 + -1r = -17.2

Solving
-12 + -1r = -17.2

Solving for variable 'r'.

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

Add '12' to each side of the equation.
-12 + 12 + -1r = -17.2 + 12

Combine like terms: -12 + 12 = 0
0 + -1r = -17.2 + 12
-1r = -17.2 + 12

Combine like terms: -17.2 + 12 = -5.2
-1r = -5.2

Divide each side by '-1'.
r = 5.2

Simplifying
r = 5.2

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