0.3(r-2)=0.4r

Solution for 0.3(r-2)=0.4r equation:

Simplifying
0.3(r + -2) = 0.4r

Reorder the terms:
0.3(-2 + r) = 0.4r
(-2 * 0.3 + r * 0.3) = 0.4r
(-0.6 + 0.3r) = 0.4r

Solving
-0.6 + 0.3r = 0.4r

Solving for variable 'r'.

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

Add '-0.4r' to each side of the equation.
-0.6 + 0.3r + -0.4r = 0.4r + -0.4r

Combine like terms: 0.3r + -0.4r = -0.1r
-0.6 + -0.1r = 0.4r + -0.4r

Combine like terms: 0.4r + -0.4r = 0.0
-0.6 + -0.1r = 0.0

Add '0.6' to each side of the equation.
-0.6 + 0.6 + -0.1r = 0.0 + 0.6

Combine like terms: -0.6 + 0.6 = 0.0
0.0 + -0.1r = 0.0 + 0.6
-0.1r = 0.0 + 0.6

Combine like terms: 0.0 + 0.6 = 0.6
-0.1r = 0.6

Divide each side by '-0.1'.
r = -6

Simplifying
r = -6