Xiao Ming has traveled for four days, and it is known that the sum of the dates of these four days is 64. What is the date of these four days? Solve by equation

Suppose the first day of travel is X, then the second day is X+ 1, the third day is X+2, and the fourth question is X+3.

So X+X+ 1+X+2+X+3=64.

The solution X= 14.5 does not meet the requirements.

So these four days are not in the same month.

Then we knew that there were 3 1 and 1 (it was later verified that 30 did not meet the requirements).

So these four days are 30th, 3rd 1,1,2nd.