1.2-0.3b=0.2b-3

Solution for 1.2-0.3b=0.2b-3 equation:

Simplifying
1.2 + -0.3b = 0.2b + -3

Reorder the terms:
1.2 + -0.3b = -3 + 0.2b

Solving
1.2 + -0.3b = -3 + 0.2b

Solving for variable 'b'.

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

Add '-0.2b' to each side of the equation.
1.2 + -0.3b + -0.2b = -3 + 0.2b + -0.2b

Combine like terms: -0.3b + -0.2b = -0.5b
1.2 + -0.5b = -3 + 0.2b + -0.2b

Combine like terms: 0.2b + -0.2b = 0.0
1.2 + -0.5b = -3 + 0.0
1.2 + -0.5b = -3

Add '-1.2' to each side of the equation.
1.2 + -1.2 + -0.5b = -3 + -1.2

Combine like terms: 1.2 + -1.2 = 0.0
0.0 + -0.5b = -3 + -1.2
-0.5b = -3 + -1.2

Combine like terms: -3 + -1.2 = -4.2
-0.5b = -4.2

Divide each side by '-0.5'.
b = 8.4

Simplifying
b = 8.4