Question

x-7y=13
7x+12y=54
porfavor:(​

Answer 1

Respuesta:

x-7y=13 (× -7)

7x+12y=54

___________

-7x+49y=-91

7x+12y=54

____________

61y=-37

y=-37/61 o - 0,61

x-7y=13

x-7(-37/61)=13

x+259/67=13

x=13-259/67

x=612/67 o 9,13