-3b-(7b-4)=

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

Simplifying
-3b + -1(7b + -4) = 0

Reorder the terms:
-3b + -1(-4 + 7b) = 0
-3b + (-4 * -1 + 7b * -1) = 0
-3b + (4 + -7b) = 0

Reorder the terms:
4 + -3b + -7b = 0

Combine like terms: -3b + -7b = -10b
4 + -10b = 0

Solving
4 + -10b = 0

Solving for variable 'b'.

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

Add '-4' to each side of the equation.
4 + -4 + -10b = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -10b = 0 + -4
-10b = 0 + -4

Combine like terms: 0 + -4 = -4
-10b = -4

Divide each side by '-10'.
b = 0.4

Simplifying
b = 0.4