10(1 + 4a) - 7a = -6a + 5(1 + 8a)

10(1 + 4a) - 7a = -6a + 5(1 + 8a)

10 + 40a - 7a = -6a + 5 + 40a
-40. -40

10 - 7a = -6a + 5
-7a + 6a = 5 - 10
-a = -5
5 = a

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.