Question

resuelve por método de igualación el siguiente sistema de ecuaciones
5x + 2y =10
7x - 3y =6

Answer 1

Respuesta:

5x + 2y =10

7x - 3y =6

5x+2y= 10

5x= 10 - 2y

X= (10-2y)/5

7x - 3y= 6

X= (6+3y)/7

(10-2y)/5= (6+3y)/7

7(10-2y)= 5(6+3y)

70 - 14y= 30+15y

-14y - 15y= 30 - 70

-29y= - 40

Y= 40/29.

Y= 1,379

X= (6+3y)/7

X=(6+3(40/29))/7

X= (6+120/29)/7

X=( 174/29+120/29)/7

X= (294/29)/7

X= 294/203

X= 1,448

Comprobamos

5x+2y=10

5(1,448)+2(1,379)=10

7,24+ 2,76= 10

10= 10.

Saludos❤️