6x + 2y = 7 5x + 6y = 2

Jawaban:

6x + 2y = 7 |x3| => 18x + 6y = 21

5x + 6y = 2 |x1| => 5x + 6y = 2

; 13x = 19

x = 19/13

# x = 19/13

y =

5 x (19/13) + 6y = 2

95 + 6y = 2

6y = 2 – 95

y = 93/6

y = 31/2