15r-4=12r-8

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Solution for 15r-4=12r-8 equation:


Simplifying
15r + -4 = 12r + -8

Reorder the terms:
-4 + 15r = 12r + -8

Reorder the terms:
-4 + 15r = -8 + 12r

Solving
-4 + 15r = -8 + 12r

Solving for variable 'r'.

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

Add '-12r' to each side of the equation.
-4 + 15r + -12r = -8 + 12r + -12r

Combine like terms: 15r + -12r = 3r
-4 + 3r = -8 + 12r + -12r

Combine like terms: 12r + -12r = 0
-4 + 3r = -8 + 0
-4 + 3r = -8

Add '4' to each side of the equation.
-4 + 4 + 3r = -8 + 4

Combine like terms: -4 + 4 = 0
0 + 3r = -8 + 4
3r = -8 + 4

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

Divide each side by '3'.
r = -1.333333333

Simplifying
r = -1.333333333

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