2.80-0.28=b

Solution for 2.80-0.28=b equation:

Simplifying
2.80 + -0.28 = b

Combine like terms: 2.80 + -0.28 = 2.52
2.52 = b

Solving
2.52 = b

Solving for variable 'b'.

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

Add '-1b' to each side of the equation.
2.52 + -1b = b + -1b

Combine like terms: b + -1b = 0
2.52 + -1b = 0

Add '-2.52' to each side of the equation.
2.52 + -2.52 + -1b = 0 + -2.52

Combine like terms: 2.52 + -2.52 = 0.00
0.00 + -1b = 0 + -2.52
-1b = 0 + -2.52

Combine like terms: 0 + -2.52 = -2.52
-1b = -2.52

Divide each side by '-1'.
b = 2.52

Simplifying
b = 2.52