Question

Rezolvați sistemul:x+3/y-1=10
x-3/y+1=4/3

Answer 1

Răspuns:

{x+3/y-1=10

{x-3/y+1=4/3

{x=10y-13

{x-3/y+1=4/3

10y-13-3/y+1=4/3

10y-16/y+1=4/3

3(10y-16)=4(y+1)

30y-48=4y+4

30y-48-4y=4

30y-4y=4+48

26y=52

y=2

x=10×2-13

x=20-13

x=7