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....l+3120dl=78900cl​

Răspuns :

Răspuns:

3120dl=312l

78900cl=789l

x+312l=789l

x=789l-312l

x=477l

Explicație pas cu pas:

xl+(3120:10)=(78900:100)

xl+312l=789l

xl=789l-312l

xl=477l

477l+312l=789l

477l=477×100=47700cl

312l=312×100=31200cl

47700cl+31200cl=78900cl