18+2(1-r)=3r

Solution for 18+2(1-r)=3r equation:

Simplifying
18 + 2(1 + -1r) = 3r
18 + (1 * 2 + -1r * 2) = 3r
18 + (2 + -2r) = 3r

Combine like terms: 18 + 2 = 20
20 + -2r = 3r

Solving
20 + -2r = 3r

Solving for variable 'r'.

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

Add '-3r' to each side of the equation.
20 + -2r + -3r = 3r + -3r

Combine like terms: -2r + -3r = -5r
20 + -5r = 3r + -3r

Combine like terms: 3r + -3r = 0
20 + -5r = 0

Add '-20' to each side of the equation.
20 + -20 + -5r = 0 + -20

Combine like terms: 20 + -20 = 0
0 + -5r = 0 + -20
-5r = 0 + -20

Combine like terms: 0 + -20 = -20
-5r = -20

Divide each side by '-5'.
r = 4

Simplifying
r = 4