SOMEONE please help me with this. “Jessie hiked 5 1/2 miles on Saturday, 6 3/4 miles on Sunday, and 2 1/3 miles on Monday. How many miles did Jessie hike altogether?

You have to start with finding the greatest common denominator(GCD)
GCD is 12
5 and 1/2 is 5 and 6/12
6 and 3/4 is 6 and 9/12
2 and 1/3 is 2 and 4/12
So you add up your fractions...
6+9+4=19
So you have the improper fraction of 19/12
Now turn 19/12 into a mixed number and you have 1 and 7/12
Then add your full miles from before
5+6+2=13
For your altogether answer you add 1 7/12 and 13
1 7/12+13=14 7/12 miles altogether.