Kuis 11 Audit Sistem Informasi- Math, Best Practice to Be Followed by General Users

5x -- 7y = -11

        13y = 27

             y = 27/13

          y = 2,0769 ~ 2,08

Setelah mencari nilai y, selanjutnya ada metode substitusi

y = 2,08

5x + 6y = 16

5x + 6 (2,08) = 16

5x  = 16 -- 12,48

x = 3,52 / 5

x = 0,704 ~ 0,70