Sagot :
10 tl olabılır belkı cunku 10 kr ve 25 kr 60 tane yanı cevap 30 tane 25 kr vardır.
denklem kurucaksın :
x+y=60
10x+25y=900
x+y=60/-10 genişlet
-10x-10y=-600
10x+25y=900
taraf tarafa topla sonuç
10y=300 ise
y=300/10
y=30
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