Solve for f.
6f + 9g = 3g + f

Answer is f=-6/5

6f+9g=3g+f

Subtract f from both sides

5f+9g=3g

Subtract 9g from both sides

5f=-6g

Divide 5 to get f by itself and you get

-6/5

Answer for 2: his profit would be $2.88 explanation: you have to first multiply 72 and 0.12 together to get $8.64 once you do that you know how much money the shopkeeper made from selling the candy bars individually. so you have to do 8.64-5.76=2.88 hope that ; )answer for 3: yeah i’m sorry i have no idea what number 3 is. i’m sorry i couldn’t with that.