Question

5X+7Y=24 Y -2X+11Y=18 ECUACIONES

Answer 1

Explicación paso a paso:

5x+7y=24

5x=24-7y

x=(24-7y)/5

-2x+11y=18

-2x=18-11y

-x=(18-11y)/2

x=-(18-11y)/2

(24-7y)/5=-(18-11y)/2

(24-7y)/5=(-18+11y)/2

2(24-7y)=5(-18+11y)

48-14y=-90+55y

48+90=55y+14y

138=69y

y=2

5x+7y=24

5x+7(2)=24

5x+14=24

5x=10

x=2

Answer 2

Respuesta:

x = 2

y = 2

Explicación paso a paso:

5(-11y + 18 ) = -2(-7y + 24 )

-55y + 90 = 14y - 48

- 14y - 55y = - 48 - 90

-69y = - 138

y = - 138/ -69

y = 2

5x + 7 (2) = 24

5x = 24 - 14

x = 10/5

x = 2

Comprobación

5x + 7y = 24

5(2) + 7(2) = 24

10 + 14 = 24

24 = 24

-2x + 11y = 18

-2(2) + 11(2) =18

- 4 + 22 = 18

18 = 18