Question

{6X+Y=2
{5X+2Y=11

Por favor presiso pra amanha

Answer 1

$\left \{ {{6X+Y=2} \atop {5X+2Y=11}} \right. \\ \\ Y = 2 - 6x \\ \\ \\ 5x + 2y = 11 \\ \\ 5x + 2. (2 - 6x) = 11 \\ \\ 5x + 4 - 12x = 11 \\ \\ - 7x = 7 \\ \\ x = -1 \\ \\ \\ Y = 2 - 6x \\ \\ Y = 2 - 6 . (-1) = 2 + 6 = 8$

Answer 2

{6x+y = 2

{5x+2y= 11

calculando pelo método da substituição

>>>isolando o y  -----> y= 2-6x

>>> substituindo y na equação    5x+2y=11

                                                     5x+2(2-6x)=11

                                                     5x+4-12x=11

                                                     5x-12x=11-4

                                                     -7x= 7

                                                    x= -7/7 ----> x= - 1

>>>>calculando o y na equação 6x+y=2

                                                    6(-1)+y=2

                                                     y=6+2

                                                     y=8

resposta :  x= -1 e y=8