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Step-by-step explanation:
1) a)
12 = 2x 2x 3
20 = 2 x2 x 5
CF = 2 x2
RF = 3 x 5
So,
LCM = cf x Rf
= 4 x 15
= 60 answer
( Do all by same way )
2) a)
C.F from both term = 3 x 7
RF from both term = 2 x 5 x 5
So,
3x7 x 2 x 5 x 5 = 1050 answer
( Do all same way )
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