Question

Discuta os sistemas abaixo
A) 2x+3y=60 ) B) 10x+20y=200
40x+80y=500
9x+18y=240

Answer 1

A) 2x+3y= 60
5xy= 60
 xy= 60/5
  xy= 12

B) 10x+20y= 200
 30xy= 200
  xy= 200/30
   xy= 6,6

C) 40x+80y= 500
 120xy= 500
  xy= 500/120
   xy= 4,1

D) 9x+18y= 240
  27xy= 240
   xy= 240/27
    xy= 8,8