{2*x+3*y=480 {4y-1.5x=15

Question

{2*x+3*y=480

{4y-1.5x=15

Answer 1

2х+3у = 480        /2

4у-1,5х = 15

 

х+1,5у = 240

4у -1,5х = 15

 

х = 240-1,5у

4у-1,5*(240-1,5у) =15

4у-360+2,25у = 15

6,25у = 375

у = 375/6,25

у = 60

х = 240-1,5*60 = 240-90 =150

Проверяем: 

4*60-1,5*150 = 240-225 =15 

Ответ: 150;60.