Answer:
the third one 7x
Step-by-step explanation:
x = miles a day
7 is days in a week
so 7 times x =7x
Well to be honest this question is really easy by what i understand, if you just need any one line to get a total of 21.
Obviously having three or four such lines might become a problem But not for this. You can obviously break down 21 in to three different categories or numbers like 1 7 and 13. And now put 13 in the middle and start from anywhere. You will get 21 along one such line.
The fraction is already in its simplest form, can not be further simplified
4(5) and 5(4)
I said these answers bc I’m pretty sure it’s multiplying
