Question

{2x+y=2
{5x-2y=31 me ajudem

Answer 1

Vamos lá

2X + Y = 2
5X - 2Y = 31

Y = 2 - 2X
5X - 2Y = 31

5X - 2 ( 2 - 2X ) = 31

5X - 4 + 4 = 31

9X - 4 = 31

9X = 31 + 4

9X = 35

X = 35/ 9

Y = 2 - 2 • 35/9

Y = 2 - 70/ 9

Y = -52/ 9

S { 35/9 , - 53/9 }