-2.8+45.3=y

Solution for -2.8+45.3=y equation:

Simplifying
-2.8 + 45.3 = y

Combine like terms: -2.8 + 45.3 = 42.5
42.5 = y

Solving
42.5 = y

Solving for variable 'y'.

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

Add '-1y' to each side of the equation.
42.5 + -1y = y + -1y

Combine like terms: y + -1y = 0
42.5 + -1y = 0

Add '-42.5' to each side of the equation.
42.5 + -42.5 + -1y = 0 + -42.5

Combine like terms: 42.5 + -42.5 = 0.0
0.0 + -1y = 0 + -42.5
-1y = 0 + -42.5

Combine like terms: 0 + -42.5 = -42.5
-1y = -42.5

Divide each side by '-1'.
y = 42.5

Simplifying
y = 42.5