r-1.5-2r=.5

Solution for r-1.5-2r=.5 equation:

Simplifying
r + -1.5 + -2r = 0.5

Reorder the terms:
-1.5 + r + -2r = 0.5

Combine like terms: r + -2r = -1r
-1.5 + -1r = 0.5

Solving
-1.5 + -1r = 0.5

Solving for variable 'r'.

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

Add '1.5' to each side of the equation.
-1.5 + 1.5 + -1r = 0.5 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + -1r = 0.5 + 1.5
-1r = 0.5 + 1.5

Combine like terms: 0.5 + 1.5 = 2
-1r = 2

Divide each side by '-1'.
r = -2

Simplifying
r = -2