-12=-3r+7r

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Solution for -12=-3r+7r equation:


Simplifying
-12 = -3r + 7r

Combine like terms: -3r + 7r = 4r
-12 = 4r

Solving
-12 = 4r

Solving for variable 'r'.

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

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

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

Add '12' to each side of the equation.
-12 + 12 + -4r = 0 + 12

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

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

Divide each side by '-4'.
r = -3

Simplifying
r = -3

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