First, Its the gcf not the gfc
Gcf : | 86 129 215 129 is a Prime number so
GCF= 1
LCM: 86 x 129x 215 =2385210
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104060.
LCM of 2, 15, 10Prime factorizatioLCM of 2, 15, 10 = 30Prime factorization:2 = 215= ...3 * 510=2....* 5===========LCM=2*3*5 = 30
60Prime Factorization of :6 = ...... 2 * 312 = .....2 * 3 * 215 = ..........3..... * 5==============LCM = 2 * 3 * 2 * 5 = 60
You make a table of their multiples and find the first instance where they are the same. To show work, circle it.
The LCM is 392.