Find the L.C.M by division method 7,10,15 and 21
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Answer:
GCF(7,21) = 7
LCM(7,21) = ( 7 × 21) / 7
LCM(7,21) = 147 / 7
LCM(7,21) = 21
GCF(10,21) = 1
LCM(10,21) = ( 10 × 21) / 1
LCM(10,21) = 210 / 1
LCM(10,21) = 210
GCF(15,21) = 3
LCM(15,21) = ( 15 × 21) / 3
LCM(15,21) = 315 / 3
LCM(15,21) = 105
Step-by-step explanation:
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