0.3r+0.6=0.2r-0.4

Solution for 0.3r+0.6=0.2r-0.4 equation:

Simplifying
0.3r + 0.6 = 0.2r + -0.4

Reorder the terms:
0.6 + 0.3r = 0.2r + -0.4

Reorder the terms:
0.6 + 0.3r = -0.4 + 0.2r

Solving
0.6 + 0.3r = -0.4 + 0.2r

Solving for variable 'r'.

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

Add '-0.2r' to each side of the equation.
0.6 + 0.3r + -0.2r = -0.4 + 0.2r + -0.2r

Combine like terms: 0.3r + -0.2r = 0.1r
0.6 + 0.1r = -0.4 + 0.2r + -0.2r

Combine like terms: 0.2r + -0.2r = 0.0
0.6 + 0.1r = -0.4 + 0.0
0.6 + 0.1r = -0.4

Add '-0.6' to each side of the equation.
0.6 + -0.6 + 0.1r = -0.4 + -0.6

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

Combine like terms: -0.4 + -0.6 = -1
0.1r = -1

Divide each side by '0.1'.
r = -10

Simplifying
r = -10