12r-1=8r

Solution for 12r-1=8r equation:

Simplifying
12r + -1 = 8r

Reorder the terms:
-1 + 12r = 8r

Solving
-1 + 12r = 8r

Solving for variable 'r'.

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

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

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

Combine like terms: 8r + -8r = 0
-1 + 4r = 0

Add '1' to each side of the equation.
-1 + 1 + 4r = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4r = 0 + 1
4r = 0 + 1

Combine like terms: 0 + 1 = 1
4r = 1

Divide each side by '4'.
r = 0.25

Simplifying
r = 0.25