1.0=0.4+y

Solution for 1.0=0.4+y equation:

Simplifying
1.0 = 0.4 + y

Solving
1.0 = 0.4 + 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.
1.0 + -1y = 0.4 + y + -1y

Combine like terms: y + -1y = 0
1.0 + -1y = 0.4 + 0
1.0 + -1y = 0.4

Add '-1.0' to each side of the equation.
1.0 + -1.0 + -1y = 0.4 + -1.0

Combine like terms: 1.0 + -1.0 = 0.0
0.0 + -1y = 0.4 + -1.0
-1y = 0.4 + -1.0

Combine like terms: 0.4 + -1.0 = -0.6
-1y = -0.6

Divide each side by '-1'.
y = 0.6

Simplifying
y = 0.6