LCM(7ab, 8a3b2, 10a4) = 280a4b2
280a4b2
6a
ab
280a4b2
35ab squared
7ab-5ab = 2
35ab squared
-5ab + 7ab -9ab + ab -2ab ... Let's simplify that a bit:ab(-5+7-9+1-2) = -8ab
The LCM is 280a4b2.
LCM(7ab, 8a3b2, 10a4) = 280a4b2
280a4b2
7ab
7ab itself
55/5ab + 4/5ab = 59/5ab
gcd of 5ab,28xy
(5ab^2 + 4cd)(5ab^2 4cd) <