1.2b+4.3=2.1-b

Solution for 1.2b+4.3=2.1-b equation:

Simplifying
1.2b + 4.3 = 2.1 + -1b

Reorder the terms:
4.3 + 1.2b = 2.1 + -1b

Solving
4.3 + 1.2b = 2.1 + -1b

Solving for variable 'b'.

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

Add 'b' to each side of the equation.
4.3 + 1.2b + b = 2.1 + -1b + b

Combine like terms: 1.2b + b = 2.2b
4.3 + 2.2b = 2.1 + -1b + b

Combine like terms: -1b + b = 0
4.3 + 2.2b = 2.1 + 0
4.3 + 2.2b = 2.1

Add '-4.3' to each side of the equation.
4.3 + -4.3 + 2.2b = 2.1 + -4.3

Combine like terms: 4.3 + -4.3 = 0.0
0.0 + 2.2b = 2.1 + -4.3
2.2b = 2.1 + -4.3

Combine like terms: 2.1 + -4.3 = -2.2
2.2b = -2.2

Divide each side by '2.2'.
b = -1

Simplifying
b = -1