factor both of them
315 = 5*63 = 5*7*9
= 3*3*5*7
882 = 2*441 = 2*7*63 = 2*7*7*9
= 2*3*3*7*7
now you can see the answers
they each have
2 threes and 1 seven = 63
315 needs 2 and 7 so 315*2*7 = 4410
882 needs 5 so 4410 sure enough
find the gcf and lcm of 315 and 882.
1 answer