" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
y = pensil
4x + 3y = 13500
3x + 2y = 9750 (samakan y atau x nya agar bisa dicoret, saya pakek y)
8x + 6y = 27000
9x + 6y = 29250 (coret y nya)
8x = 27000
9x = 29250 (dikurangi)
-x = -2250
x = 2250
jadi harga 1 buku tulis 2250
harga sati pensil = 4x + 3y =13500
4(2250) + 3y = 13500
9000 + 3y = 13500
3y = 4500
y = 1500
jadi harga 1 pensil 1500
harga 2 buku tulis dan 3 pensil
= 2(2250) + 3(1500)
9000