-3(-4b-9)=-7b

Solution for -3(-4b-9)=-7b equation:

Simplifying
-3(-4b + -9) = -7b

Reorder the terms:
-3(-9 + -4b) = -7b
(-9 * -3 + -4b * -3) = -7b
(27 + 12b) = -7b

Solving
27 + 12b = -7b

Solving for variable 'b'.

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

Add '7b' to each side of the equation.
27 + 12b + 7b = -7b + 7b

Combine like terms: 12b + 7b = 19b
27 + 19b = -7b + 7b

Combine like terms: -7b + 7b = 0
27 + 19b = 0

Add '-27' to each side of the equation.
27 + -27 + 19b = 0 + -27

Combine like terms: 27 + -27 = 0
0 + 19b = 0 + -27
19b = 0 + -27

Combine like terms: 0 + -27 = -27
19b = -27

Divide each side by '19'.
b = -1.421052632

Simplifying
b = -1.421052632