Question

2(x + 1) - x = 3(y + 2)
2x – 5 = 4y +4
*
g)​

Answer 1

sendo:

2*(x + 1) - x = 3*(y + 2)

2x+ 2 - x = 3y + 6

x + 2 = 3y + 6

x - 3y = 4 (I)

2x - 5 = 4y + 4

2x - 4y = 9 (II)

sistema:

x - 3y = 4

2x - 4y = 9

2x - 6y = 8

-4y + 6y = 9 - 8

2y = 1

valor de y:

y = 1/2

valor de x:

x = 4 + 3y = 4 + 3/2 = 11/2

S = ( 11/2 , 1/2 )