-2r-4=-12

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Solution for -2r-4=-12 equation: 


Simplifying
-2r + -4 = -12

Reorder the terms:
-4 + -2r = -12

Solving
-4 + -2r = -12

Solving for variable 'r'.

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

Add '4' to each side of the equation.
-4 + 4 + -2r = -12 + 4

Combine like terms: -4 + 4 = 0
0 + -2r = -12 + 4
-2r = -12 + 4

Combine like terms: -12 + 4 = -8
-2r = -8

Divide each side by '-2'.
r = 4

Simplifying
r = 4

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