(7b-4)-3(2b+1)=-7

Solution for (7b-4)-3(2b+1)=-7 equation:

Simplifying
(7b + -4) + -3(2b + 1) = -7

Reorder the terms:
(-4 + 7b) + -3(2b + 1) = -7

Remove parenthesis around (-4 + 7b)
-4 + 7b + -3(2b + 1) = -7

Reorder the terms:
-4 + 7b + -3(1 + 2b) = -7
-4 + 7b + (1 * -3 + 2b * -3) = -7
-4 + 7b + (-3 + -6b) = -7

Reorder the terms:
-4 + -3 + 7b + -6b = -7

Combine like terms: -4 + -3 = -7
-7 + 7b + -6b = -7

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

Add '7' to each side of the equation.
-7 + 7 + 1b = -7 + 7

Combine like terms: -7 + 7 = 0
0 + 1b = -7 + 7
1b = -7 + 7

Combine like terms: -7 + 7 = 0
1b = 0

Solving
1b = 0

Solving for variable 'b'.

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

Divide each side by '1'.
b = 0

Simplifying
b = 0