r-8=5r-3r-12

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


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

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

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

Combine like terms: 5r + -3r = 2r
-8 + r = -12 + 2r

Solving
-8 + r = -12 + 2r

Solving for variable 'r'.

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

Add '-2r' to each side of the equation.
-8 + r + -2r = -12 + 2r + -2r

Combine like terms: r + -2r = -1r
-8 + -1r = -12 + 2r + -2r

Combine like terms: 2r + -2r = 0
-8 + -1r = -12 + 0
-8 + -1r = -12

Add '8' to each side of the equation.
-8 + 8 + -1r = -12 + 8

Combine like terms: -8 + 8 = 0
0 + -1r = -12 + 8
-1r = -12 + 8

Combine like terms: -12 + 8 = -4
-1r = -4

Divide each side by '-1'.
r = 4

Simplifying
r = 4

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