.42-1.2=.3r+.6

Solution for .42-1.2=.3r+.6 equation:

Simplifying
0.42 + -1.2 = 0.3r + 0.6

Combine like terms: 0.42 + -1.2 = -0.78
-0.78 = 0.3r + 0.6

Reorder the terms:
-0.78 = 0.6 + 0.3r

Solving
-0.78 = 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.
-0.78 + -0.3r = 0.6 + 0.3r + -0.3r

Combine like terms: 0.3r + -0.3r = 0.0
-0.78 + -0.3r = 0.6 + 0.0
-0.78 + -0.3r = 0.6

Add '0.78' to each side of the equation.
-0.78 + 0.78 + -0.3r = 0.6 + 0.78

Combine like terms: -0.78 + 0.78 = 0.00
0.00 + -0.3r = 0.6 + 0.78
-0.3r = 0.6 + 0.78

Combine like terms: 0.6 + 0.78 = 1.38
-0.3r = 1.38

Divide each side by '-0.3'.
r = -4.6

Simplifying
r = -4.6