Question

Daca x/y = 2/3 atunci 3x+2y/y-x este :

Answer 1

x/y = 2/3 ⇒ 3x=2y

3x=2y ⇒ x= 2y/3

Deasupra fractiei avem:

3x+2y, unde 3x=2y,
Deci putem scrie in loc de 3x 2y.

2y +2y= 4y

Sub fractie avem:

y -x= y -2y/3=3y/3-2y/3= y/3

Obtinem :

3x+2y/y-x  = 4y : y/3= 4y * 3/y= 12y/ y = 12

Answer 2

3x2+2x3=6+6=12
y-x=3-2=1