Question

a)
{x − 3 = y
{x + 3y = 6
b)
{5x − 2 = 13
{y = 8 − 3x

Answer 1

Respuesta:

Explicación paso a paso:

x + 3y = 6

x + 3 ( x - 3) = 6

x + (3x - 9) = 6

4x = 6 + 9

x = 15/4

5x - 2y = 13

5x -  2(8-3x) =13

5x - ( 16 - 6x)=13

11x = 13 + 16

x= 29/11