Question

4(x-y)-3(y+2)=5y+x
5(x+3)=2y-3(y+x)+7

Answer 1

Respuesta:

Explicación paso a paso:

Answer 2

4(x-y) -3(y+2) = 5y + x (1)
5(x+3) = 2y - 3(y + x) + 7 (2)

4x - 4y - 3y - 6 = 5y + x
3x - 12y = 6. (1)

5x + 15 = 2y -3y - 3x + 7
5x - 2y + 3y + 3x = 7 - 15
8x + y = -8 (2)

Método sustitución

x = 6 + 12y / 3 (1)
x = -8 - y /8 (2)


- 8 - y / 8 = 6 + 12y / 3
-8 -y /8 = 2 + 4y
-8 - y = 8(2 + 4y)
-y = 16 + 32y + 8
-y - 32y = 16 + 8
-33y = 24

y = -24/33

x = 6 + 12y / 3
x = 2 + 4y
x = 2 + 4(-24/33)
x = 2 - 32/11
x = -10/11

Saludos!