Page 21 - PPT SPLDV (1)

Lanjutan

Kita substitusikan pers 3 ke pers 2

Materi
X + (70000-2x )= 65000

x – 2x = 65000 – 70000

-x = - 5000

Contoh X = 5000

soal Masukkan nilai x ke pers 1

2 ( 5000 ) + 2y = 70000

2y = 70000 – 10000

2y = 60000

Latihan Y= 30000

Soal
Jadi harga celana = 5000, harga kalung

=30000