Baca Juga: CEK! Kunci Jawaban Matematika Kelas 8 Halaman 15 Kurikulum Merdeka Penguatan 1
Soal 3
Selesaikan setiap sistem persamaan berikut.
(1) 2x – 3y = 12
3x + y = 7
(2) 3x – 4y = 10
5x – 8y = 22
(3) –2x + 3y = –9
4x – 5y = 15
Jawaban:
(1) x = 3
y = –2
(2) x = 0
y = –3
(3) x = –2
y = –4