0.4-1.3=0.3r+0.6

Solution for 0.4-1.3=0.3r+0.6 equation:

Simplifying
0.4 + -1.3 = 0.3r + 0.6

Combine like terms: 0.4 + -1.3 = -0.9
-0.9 = 0.3r + 0.6

Reorder the terms:
-0.9 = 0.6 + 0.3r

Solving
-0.9 = 0.6 + 0.3r

Solving for variable 'r'.

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

Add '-0.3r' to each side of the equation.
-0.9 + -0.3r = 0.6 + 0.3r + -0.3r

Combine like terms: 0.3r + -0.3r = 0.0
-0.9 + -0.3r = 0.6 + 0.0
-0.9 + -0.3r = 0.6

Add '0.9' to each side of the equation.
-0.9 + 0.9 + -0.3r = 0.6 + 0.9

Combine like terms: -0.9 + 0.9 = 0.0
0.0 + -0.3r = 0.6 + 0.9
-0.3r = 0.6 + 0.9

Combine like terms: 0.6 + 0.9 = 1.5
-0.3r = 1.5

Divide each side by '-0.3'.
r = -5

Simplifying
r = -5