Resposta :
( y - 8 ) x+2x + x( y - 5 )= ( 3y - 7 ) 2 + 4y
xy - 8x +2x +xy - 5x = 6y - 14 + 4y
4xy - 13x = 10y - 14
x= 3
4.3.y - 13.3 = 10y - 14
12y - 39y -10y = - 14
- 37y = - 14(-1)
37y = 14
y= 14
37
xy - 8x +2x +xy - 5x = 6y - 14 + 4y
4xy - 13x = 10y - 14
x= 3
4.3.y - 13.3 = 10y - 14
12y - 39y -10y = - 14
- 37y = - 14(-1)
37y = 14
y= 14
37