find the LCM of 20 , 25,30 ,45 by common division method
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Step-by-step explanation:
20/25=4/5
20/25=4/5 cross multiply
20×5=100
25×4=100
100/30=10/3 cross multiply
100×3=300
30×10=300
300/45=20/3 cross multiply
300×3=900
45×20=900
=900 is the correct answer
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