Question

Resolver
3x+5y=1
2x-y=-8
Luego indicar "x +y"

Answer 1

Explicación paso a paso:

3x+5y=1

2x-y=-8

3x+5y=1

(2x-y= -8) x5

3x+5y=1 +

10x-5y= -40

__________

13x = -39

x = -3

. . . . . . . . . . . .

3x+5y=1

3(-3)+5y =1

-9 + 5y = 1

5y = 10

y= 2

Rpta : x + y = -3 + 2 = -1

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