Question

Rezolvati in R ecuatia :

Answer 1

-3/4x=1/5
⇔x= -1/5x4/3
⇔x=- 4/15
verificare: -3/4x(-4/15)= 12/60=1/5

Answer 2

$\frac{-3x}{4} = \frac{1}{5}$

Aducen la numitor comun (20),prima fractie amplificam cu 5 iar a doua cu 4 si inmultim cu 20 ca sa scapam de numitor.

Avem: -15x=4 =>x=$\frac{4}{-15}$