-3r=8-5r-12

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Solution for -3r=8-5r-12 equation:


Simplifying
-3r = 8 + -5r + -12

Reorder the terms:
-3r = 8 + -12 + -5r

Combine like terms: 8 + -12 = -4
-3r = -4 + -5r

Solving
-3r = -4 + -5r

Solving for variable 'r'.

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

Add '5r' to each side of the equation.
-3r + 5r = -4 + -5r + 5r

Combine like terms: -3r + 5r = 2r
2r = -4 + -5r + 5r

Combine like terms: -5r + 5r = 0
2r = -4 + 0
2r = -4

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

Simplifying
r = -2

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