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rezolva si verifica prin proba dp model: exemplu:96-52=44;96-44=52;52+44=96;44+52=96.77-46=​

Răspuns :

77-46=31

77-31=46

46+31=77

31+46=77

77-46=31

77-31=46

46+31=77

31+46=77


48-23=25
48-25=23
23+25=48
25+23=48