Please rephrase question.
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21 over 42, as a fraction, is 1/2. As a division problem, it's .5
Well for this all you need to do is divide 42 by 5. So 5 goes into 42, 8 times with a remainder of 2. So that would be 8*5 = 40 + 2
Divide it by 7 to get 2 over 5
210The prime factorization of35 = 5*742 = 2*3*7So the LCM is the smallest number that both 35 & 42 will divide into evenly.So, 2*3*5*7 = 210
Divide by 2 32 / 40 = 16 / 20 Divide by 2 16 / 20 = 8 / 10 Divide by 2 8 / 10 = 4 / 5 Answer: 4 / 5