5r-12-3r=8

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


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

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

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

Solving
-12 + 2r = 8

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 + 2r = 8 + 12

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

Combine like terms: 8 + 12 = 20
2r = 20

Divide each side by '2'.
r = 10

Simplifying
r = 10

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