50-6x=y
since each car wash is 6 dollars and you do not know the number of cars washed it is 6x
50-6x is because you need to find out how much is left in the card so you subtract the total from how much she spent
Answer:
Its Easy 63137x7821/767382(87438>989)8788123.
Step-by-step explanation:
Answer: 21.67 km
Step-by-step explanation: