2(r-.5)=r(1.8)

Solution for 2(r-.5)=r(1.8) equation:

Simplifying
2(r + -0.5) = r(1.8)

Reorder the terms:
2(-0.5 + r) = r(1.8)
(-0.5 * 2 + r * 2) = r(1.8)
(-1 + 2r) = r(1.8)

Reorder the terms for easier multiplication:
-1 + 2r = 1.8r

Solving
-1 + 2r = 1.8r

Solving for variable 'r'.

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

Add '-1.8r' to each side of the equation.
-1 + 2r + -1.8r = 1.8r + -1.8r

Combine like terms: 2r + -1.8r = 0.2r
-1 + 0.2r = 1.8r + -1.8r

Combine like terms: 1.8r + -1.8r = 0.0
-1 + 0.2r = 0.0

Add '1' to each side of the equation.
-1 + 1 + 0.2r = 0.0 + 1

Combine like terms: -1 + 1 = 0
0 + 0.2r = 0.0 + 1
0.2r = 0.0 + 1

Combine like terms: 0.0 + 1 = 1
0.2r = 1

Divide each side by '0.2'.
r = 5

Simplifying
r = 5