Question

Tìm \(x\)

a, \(x\): 13 / 16 = 5 / -8

b, \(x\) . -14 / 28 = 6 / -9 \(-\) 2 / 15

 

Answer 1

\(x:\dfrac{13}{16}=\dfrac{5}{-8}\\ x=\dfrac{5}{-8}.\dfrac{13}{16}=\dfrac{65}{-128}\)

Answer 2

\(x.\dfrac{-1}{2}=\dfrac{-4}{5}\\ x=\dfrac{-4}{5}:\dfrac{-1}{2}=\dfrac{8}{5}\)