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3/4 kg+250g=?;
3/4g+120mg=?.


Răspuns :

3/4 kg+250g=750g+250g=1000g=1kg

3/4g+120mg=750mg+120mg=870mg
3/4  kg = 3/4 x 1000 = 750g
3/4 kg +250g = 750g + 250g =1000g  

3/4 g = 3/4 x 1000 = 750 mg
3/4g +120mg = 750mg +120mg = 870mg