Question

if 1/a+1/b=c/d and ac=e+d, then prove that a,b,e and d are in proportion

Answer 1

Answer:Hey tushar...I hope yould recognise me..Im priyanshu Sahoo

so here's the answer:-

1/a+1/b=c/d

=>a+b/ab=c/d

=>ad+bd=acb

=>ad+bd=(e+d)b(since ac=e+d)

=>ad+bd=eb+bd

=>ad=eb

(crossing over...)

=>a/e=b/d

therefore, a,b,e and d are iHope this helps you :) :) :) :)