-2=3(0)+b

Solution for -2=3(0)+b equation:

Simplifying
-2 = 3(0) + b

Multiply 3 * 0
-2 = 0 + b

Anything times zero is zero.
-2 = 0 + b
Remove the zero:
-2 = b

Solving
-2 = 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 + -1b = b + -1b

Combine like terms: b + -1b = 0
-2 + -1b = 0

Add '2' to each side of the equation.
-2 + 2 + -1b = 0 + 2

Combine like terms: -2 + 2 = 0
0 + -1b = 0 + 2
-1b = 0 + 2

Combine like terms: 0 + 2 = 2
-1b = 2

Divide each side by '-1'.
b = -2

Simplifying
b = -2