Answer:
a/b=e/f
Explanation:
a/b=3.5
f/e=2.5
ab/fe=3.5/2.5
ab/fe=1.4
Bc=ed
bc/ed=6.3/4.5
Bc/ed=1.4
Ac=fd
Ac/fd=8.4/6.0
Ac/fd=1.4
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