Question

(a-b)/a = (c-d)/c

mik đg cần gấp lms, giúp mik vs

Answer 1

muốn\(\frac{\left(a-b\right)}{a}\)=\(\frac{\left(c-d\right)}{c}\)

thì\(\frac{\left(c-d\right)}{c}\)=n.\(\frac{\left(a-b\right)}{a}\)(n\(\in\)N*)

giả sử n=2 => ax2=c;bx2=d;(c-d),(a-b)\(⋮\)2 (c>d;a>b)