Answer:
b = 14
Step-by-step explanation:
3b/7 - 1 = 5
Add 1 to both sides.
3b/7 = 6
Multiply both sides by 7 to cancel the fraction.
3b = 42
Divide both sides by 3 to get b by itself.
b = 14
Proof:
3b/7 - 1 = 5
Insert variable.
3(14)/7 - 1 = 5
Multiply.
42/7 - 1 = 5
Divide.
6 - 1 = 5
Subtract.
5 = 5
