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harga tas= x
harga sepatu=y
diketahui:
2x=5y--> x=5/2y
4x+y =1.100.000
3x+2y =?
penyelesaian
4x+y=1.1.00.000
4(5/2y)+y=1.100.000
10y+y=1.100.000
11y=1.100.000
y= 1.100.000/11
y=100.000
harga sepasang sepatu=100.000
4x+y=1.100.000
4x+100.000 =1.100.000
4x=1.000.000
x=250.000
harga tas=250.000
3x+2y=3(250.000)+2(100.000)
=750.000+200.000
=950.000
jd harga 3 tas dan 2 pasang sepatu adalah Rp.950.000