Question

(c ^ 4 + b ^ 5 * c ^ 7)/(c ^ 8 * a ^ 4 * b ^ 3)​

Answer 1

Answer:

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Answer 2

Answer:

Given a:b=2:3,b:c=4:5,c:d=6:7

a:b=2×8:3×8=16:24

b:c=4×6:5×6=24:30

c:d=6×5:7×5=30:35

soa:b:c:d=16:24:30:35

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