Question

{2x+5y=9}
{3x-2y=4}
S={1,2}

Answer 1

Resposta:

Explicação passo a passo:

{2x+5y=9

{3x-2y=4.(2,5)

{2x+5y=9

{7,5x-5y=10.(2,5)

9,5x=19.(2)

19x=38

x=2

{2x+5y=9

2.2+5y=9

4+5y=9

5y=9-4

5y=5

y=1

S={x,y}

S={2,1}