9(b+5)-3=78

Solution for 9(b+5)-3=78 equation:

Simplifying
9(b + 5) + -3 = 78

Reorder the terms:
9(5 + b) + -3 = 78
(5 * 9 + b * 9) + -3 = 78
(45 + 9b) + -3 = 78

Reorder the terms:
45 + -3 + 9b = 78

Combine like terms: 45 + -3 = 42
42 + 9b = 78

Solving
42 + 9b = 78

Solving for variable 'b'.

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

Add '-42' to each side of the equation.
42 + -42 + 9b = 78 + -42

Combine like terms: 42 + -42 = 0
0 + 9b = 78 + -42
9b = 78 + -42

Combine like terms: 78 + -42 = 36
9b = 36

Divide each side by '9'.
b = 4

Simplifying
b = 4