-3=0+b

Solution for -3=0+b equation:

Simplifying
-3 = 0 + b
Remove the zero:
-3 = b

Solving
-3 = 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.
-3 + -1b = b + -1b

Combine like terms: b + -1b = 0
-3 + -1b = 0

Add '3' to each side of the equation.
-3 + 3 + -1b = 0 + 3

Combine like terms: -3 + 3 = 0
0 + -1b = 0 + 3
-1b = 0 + 3

Combine like terms: 0 + 3 = 3
-1b = 3

Divide each side by '-1'.
b = -3

Simplifying
b = -3