3-(b+1)=0

Solution for 3-(b+1)=0 equation:

Simplifying
3 + -1(b + 1) = 0

Reorder the terms:
3 + -1(1 + b) = 0
3 + (1 * -1 + b * -1) = 0
3 + (-1 + -1b) = 0

Combine like terms: 3 + -1 = 2
2 + -1b = 0

Solving
2 + -1b = 0

Solving for variable 'b'.

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

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