-0.5r-12=-27

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Solution for -0.5r-12=-27 equation: 


Simplifying
-0.5r + -12 = -27

Reorder the terms:
-12 + -0.5r = -27

Solving
-12 + -0.5r = -27

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 + -0.5r = -27 + 12

Combine like terms: -12 + 12 = 0
0 + -0.5r = -27 + 12
-0.5r = -27 + 12

Combine like terms: -27 + 12 = -15
-0.5r = -15

Divide each side by '-0.5'.
r = 30

Simplifying
r = 30

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