tas = x
sepatu = y
(i) 2x=5y jadi 2x-5y=0
(ii) 4x+y=1.100.000
2x-5y=0 | kali 2|
4x+y=1.100.000 | kali 1 |
-------------------------- (-)
jadi,
4x-10y=0
4x+y=1.100.000
-11y=-1.100.000
y= 100.000
substitusikan ke salah satu (i) atau (ii):
2x-5(100.000)=0
2x=500.000
x=250.000
jadi, 3x+2y= 3(250.000) + 2(100.000) = 950.000
#CMIIW
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tas = x
sepatu = y
(i) 2x=5y jadi 2x-5y=0
(ii) 4x+y=1.100.000
2x-5y=0 | kali 2|
4x+y=1.100.000 | kali 1 |
-------------------------- (-)
jadi,
4x-10y=0
4x+y=1.100.000
-------------------------- (-)
-11y=-1.100.000
y= 100.000
substitusikan ke salah satu (i) atau (ii):
2x-5(100.000)=0
2x=500.000
x=250.000
jadi, 3x+2y= 3(250.000) + 2(100.000) = 950.000
#CMIIW