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

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

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

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

Combine like terms: 7b + -4b = 3b
3 + 3b = 3(b + 4)

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

Add '-3b' to each side of the equation.
3 + 3b + -3b = 12 + 3b + -3b

Combine like terms: 3b + -3b = 0
3 + 0 = 12 + 3b + -3b
3 = 12 + 3b + -3b

Combine like terms: 3b + -3b = 0
3 = 12 + 0
3 = 12

Solving
3 = 12

Couldn't find a variable to solve for.

This equation is invalid, the left and right sides are not equal, therefore there is no solution.