Question

5x – 7y = -4
9x + 11y = 40

Answer 1

Respuesta:

Explicación paso a paso:

X=-4/5+7/5Y

9X+11Y=40

9(-4/5+7/5Y)+11Y=40

Y=2

X=-4/5+7/5Y^2

X=2

(X,Y)=(2,2)

5X^2-7Y^2=-4

9X^2+11Y^2=40

-4=-4

40=40

(X,Y)=(2,2)