-3+9=4b-1-3b

Solution for -3+9=4b-1-3b equation:

Simplifying
-3 + 9 = 4b + -1 + -3b

Combine like terms: -3 + 9 = 6
6 = 4b + -1 + -3b

Reorder the terms:
6 = -1 + 4b + -3b

Combine like terms: 4b + -3b = 1b
6 = -1 + 1b

Solving
6 = -1 + 1b

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.
6 + -1b = -1 + 1b + -1b

Combine like terms: 1b + -1b = 0
6 + -1b = -1 + 0
6 + -1b = -1

Add '-6' to each side of the equation.
6 + -6 + -1b = -1 + -6

Combine like terms: 6 + -6 = 0
0 + -1b = -1 + -6
-1b = -1 + -6

Combine like terms: -1 + -6 = -7
-1b = -7

Divide each side by '-1'.
b = 7

Simplifying
b = 7