math help please?

Question

together Fred and Tony walked a total of 7 miles. If Fred walked x miles, how many milesdid Tony walk?

please explain

Answer 1

If Fred walked x miles, lets assume Tony walked y miles.

According to the sentence Fred and Tony together walked for 7 miles, now here's how you calculate it.

X (for Fred) + Y (for Tony) =7

X+Y=7
X-X+Y=7-X (Here we completely remove the X factor by subtracting it from it self and then subtract again to the other side)
Y=7-X

Therefore Tony (Y) walked for distance equivalent to 7-X.
But X is equivalent to 1 because it is a single factor not accompanied by any figure.For example if it was 2X then it would mean X=2. But in this case X alone or any other factor alone means 1.

Final Distance covered by Tony is:
Y=7-X
Y=7-1
Y=6

Therefore Tony covered 6 miles and Fred covered 1 mile.

Answer 2

Let x be the miles that Fred walked.
Let y be the miles that Tony walked.

"Together, Fred and Tony walked a total of 7 miles."

x +y = 7

"If Fred walked x miles, how many miles did Tony walk?"

we need something that looks like y = ...... because:
"Let y be the miles that Tony walked."
so we take the x to the right hand side, making it negative:

y = 7 - x

"Tony walked 7 miles minus the miles Fred walked."

Answer 3

If Fred and Tony walked together, if Fred walked x miles, Tony also walked x miles, so, x = 7 miles.

Or, if they walked separately, Fred walked x miles, Tony would have walked (7 - x) miles.

Answer 4

You know that fred's miles + tony's miles = 7. So, if fred walked x, you can replace fred's miles with x and get

x + tony's miles = 7. Solve for Tony's miles. So, 7-X = Tony's miles.

Answer 5

Fred walked x miles.So,Tony walked:

7-x

7-x is the algebraic expression to find out how many miles did Tony walk.

Answer 6

= 7 - x

Answer: Tony walked 7 - x miles

Answer 7

I think your missing something in the question. There can’t be two variables. Otherwise there isn’t a really solid answer. Just a formula.