(10b-3)-3(3b+4)=-4

Solution for (10b-3)-3(3b+4)=-4 equation:

Simplifying
(10b + -3) + -3(3b + 4) = -4

Reorder the terms:
(-3 + 10b) + -3(3b + 4) = -4

Remove parenthesis around (-3 + 10b)
-3 + 10b + -3(3b + 4) = -4

Reorder the terms:
-3 + 10b + -3(4 + 3b) = -4
-3 + 10b + (4 * -3 + 3b * -3) = -4
-3 + 10b + (-12 + -9b) = -4

Reorder the terms:
-3 + -12 + 10b + -9b = -4

Combine like terms: -3 + -12 = -15
-15 + 10b + -9b = -4

Combine like terms: 10b + -9b = 1b
-15 + 1b = -4

Solving
-15 + 1b = -4

Solving for variable 'b'.

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

Add '15' to each side of the equation.
-15 + 15 + 1b = -4 + 15

Combine like terms: -15 + 15 = 0
0 + 1b = -4 + 15
1b = -4 + 15

Combine like terms: -4 + 15 = 11
1b = 11

Divide each side by '1'.
b = 11

Simplifying
b = 11