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Practice H.W. Answer
1. A:B:C = 45:105:42
2. Fraction = 3/22
3. AB:BC:CD = 45:4:21

Please make its next part. Love You.

That's a good explanation.

Great lesson

Last problem:
       AB : BC : CD = 45 : 4 : 21
Check:
       AB : BD = 45:(4+21) = 45 : 25 = 9 : 5   (ok)
       AC : CD = (45+4):21 = 49 : 21 = 7 : 3   (ok)
Solution:
AB : BD = 9 : 5  →  14 parts
AC : CD = 7 : 3  →  10 parts
LCM(14,10) = 70, so we multiply first ratio by 5 and second ratio by 7
AB : BD = 45 : 25  →  AB = 45 parts
AC : CD = 49 : 21  →  CD = 21 parts
BC = 25 − 21 = 4 parts (or 49 − 45 = 4 parts)
AB : BC : CD = 45 : 4 : 21

Brain Station time

1:2

The answer is 36:13:35

25,,14,,21

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The answer of the last question is:
AB:BC:CD=405:162:63.      Is ✅ or ❌ 🤔🤔🤨.please tell me

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