Answer:
-15-8
Step-by-step explanation:
An expression to show how much money Miles has left would be -8-15
This is because when he borrows from his parents he owes them money too, making the money he has -15
When he also owes his friend $8 he's losing more money, which means he also has $-8 left
-8-15
he already owed his friend $8 so he had -8, he was in debt. then he borrowed more money putting him deeper in debt -15
x + 6y = 9
-x + 2y = -15
-------------------add
8y = - 6 <=== u see that the x terms cancel each other out
6
the answer would be 5.70588235294, but if you are rounding to the nearest tenth, its 6