Answer:
70
Explanation:
the multiples of 5 are as follows -
5,10,15,20,25,30,35,40,45,50,55,60,65,70
the multiples of 7 are as follows -
7,14,21,28,35,42,49,56,63,70
from what is shown, 70 is the only first common multiple of the two numbers
i hope this helps! :)