Question

(3×+5y=7)
(2×-y=4)


ayudaaaaaa​

Answer 1

Explicación paso a paso:

3x+5y=7

2x-y=-4

3x+5y=7

2x-y=-4. (5)

_______

3x+5y=7. +

10x-5y=-20

_________

3x+10x +5y-5y = 7-20

13x = -13

x = -1

2x-y=-4

2(-1)-y= 4

-2-y = -4

2 = y