Question

Resolver : x+2y/3 + x-3y/4 + x+y/9=

Answer 1

sacas mínimo de (3-4-9)
sería :36 
12(x+2y)+9(x-3y)+4(x+y)
-----------------------------------=0
           36

12x+24y+9x-27y+4x+4y=0
25x-3y+4y=0
25x+y=0