Question

7 + 2 = 31

5 + 3 = 30 método de igualación​

Answer 1

Respuesta:

Te falta las variables

7 x+ 2y = 31

5x + 3y = 30

7X+2y= 31

7x = 31 - 2y

X= (31 - 2y)/7.

5x+3y=30

5x= 30 - 3y

X= (30 - 3y)/5

(31 - 2y)/7= (30 - 3y)/5

5(31-2y) =7(30 - 3y)

155 - 10y= 210 - 21y

-10y +21y= 210 - 155

11y= 55

Y= 55/11

Y= 5.

X= (30 - 3y)/5

X= (30-3(5))/5

X= (30-15)/5

X= 15/5

X= 3.

Comprobamos

7 x+ 2y = 31

7(3) +2(5)=31

21 +10= 31

31= 31.

Los valores son para X = 3, y Y =5

Saludos❤️