(x)(2)+(x+20)(4)=3502x+4x+80=3506x+80=3506x+80-350=2706x+270/6=45 rate of bus45+20 = rate of train
To find out the last operation, we must solve the entire problem.
We are given:

Let's simplify the signs so they don't clutter our equation.

We always need to be sure to use PEMDAS. Since there is no expression to solve in parenthesis and no exponents are present, we will move on to multiplication. We can multiply -9 and -6 in the denominator. When we do that, we get:

Next, all you need to do is combine like terms in the numerator and the denominator.

Simplify.

To answer the question, the last operation to be performed when finding the value would be division.
I think that it is 15 minutes
Answer: 504.91 miles
Step-by-step explanation:
From the question, we are told that Trevon and his friends are going on a road trip that is 594 7/25 miles long and that they have 89 37/100 miles to reach their destination. To know how far that they've already traveled, we subtract 89 37/100 from 594 7/25.
= 594 7/25 - 89 37/100
Since the answer should be in decimal, we can change the fractions to decimal.
= 594 7/25 - 89 37/100
= [594 +(7/25 × 100)] - [89 + (37/100 × 100)]
= (594 + 0.28) - (89 + 0.37)
= 594.28 - 89.37
= 504.91 miles
They've already travelled 504.91 miles