(7) 3x – 2y = –11
2x + 3y = –3
(8) 4x + 3y = 0
5x – 2y = –23
(9) 5x – 7y = –16
–4x – 3y = 30
Kunci jawaban:
1) 3x + y = 17
x - y = 3
_____________ +
4x = 20
x = 5
Maka,
x - y = 3
5 - y = 3
y = 2
(7) 3x – 2y = –11
2x + 3y = –3
(8) 4x + 3y = 0
5x – 2y = –23
(9) 5x – 7y = –16
–4x – 3y = 30
Kunci jawaban:
1) 3x + y = 17
x - y = 3
_____________ +
4x = 20
x = 5
Maka,
x - y = 3
5 - y = 3
y = 2
Editor: Yumi Karasuma
Sumber: Buku Matematika Kelas 8 Semester 1