Jawblah kedua soal berikut dengan cara campuran!

Jawaban:

x – 2y = 5

x = 5 + 2y

2x = -y + 4

2(5 + 2y) = -y + 4

10 + 4y = -y + 4

4y + y = 4 – 10

5y = -6

y =-6/5

x – 2y = 5

x = 5 + 2y

x = 5 + 2(-6/5)

x = 5 – 12/5

x = 25/5 – 12/5

x = 13/5