Question

Jeff bought 3 bags of dog food. He also bought a set of new dog bowls that cost eighteen dollars . He spent a total of forty-five dollars. Write both the verbal and mathematical equation to find out how much Jeff paid for each bag of dog food.

Answer 1

[3 + 18x = 45 ]
-3 -3
3 was the constant so we cancel the three by changing to the opposite . Then subtract the -3 from 45 which equals 42. After subtract 3 , you divide by the number that has a variable x is the variable
=18 divide by 42
x=21