Question

x+y =3 -x+y =7 Halla valor de X+Y ​

Answer 1

x+y=3x+y=7Halla volor de X+Y

Answer 2

Explicación paso a paso:

$y = 3 - x$

$- x + 3 - x = 7$

$- 2 x = 4$

$- 2 = x$

Reemplazomos Y

$y = 3 - ( - 2)$

$y = 3 + 2$

$y = 5$

Sumamos

5+(-2)

5-2

3