" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
8x + 6y = 14400
6x + 5y = 11200
-----------------------
samakan salah satu koefisien menjadi:
40x + 30y = 72000
36x + 30y = 67200
-------------------------- (-)
4x + 0 = 4800
4× = 4800
x = 4800/4
x = 1200
6x + 5y = 11200
6(1200) + 5y = 11200
7200 + 5y = 11200
5y = 11200 - 7200
5y = 4000
y = 4000/5
y= 800
maka :
5x + 8y = 5(1200) + 8(800)
= 6000 + 6400
= 12400