Question

2x + y = 7
x + 2y = 2​

Answer 1

Resultado:

(16/5 | -3/5)

Explicación paso a paso:

2x+y=7

x+2y=2

(II) x+2y=2

x=2-2y

(I) 2(2-2y)+y=7

4-4y+y=7

4-5y=7

-5y=3

y= -3/5

(II)

x=2-2(-3/5)

x=2+6/5

x=16/5