Question

calcule os valores de x e y de que os pares ordenados (x-3,2y-1) e (2x+2,-y-2) sejam iguais

Answer 1

(x-3,2y-1) =  (2x+2,-y-2)

x-3 = 2x+2                                                         2y-1 =  -y-2

x-2x = 2  + 3                                                      2y+ y =  -2 + 1

   -x = 5

(-1) [- x   =   5 ]                                                   3y =    -1

 x =     -5                                                                y = -1/3

                

Então temos:

(-5-3, 2(-1/3) -1) =

(-8,   -2/3    -1) =

(-8, -5/3)