Answer:
70
Step-by-step explanation:
First, I would list out the multiples of each number and see which number they have in common first:
7: 7, 14, 21, 38, 35, 42, 49, 56, 63, 70, 77, 84
10: 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 110
The first number that 7 and 10 have in common is 70, and therefore this is the LCM.
Hope I helped :)
