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cum se rezolva    37+29-x+19-12+10=57-28

Răspuns :

37+29-x+19-12+10=57-28
82-x=29
x=29-28
x=1
37+29=66+19=85-12=73+10=83-x=57-28= 29
83-x=29
x=83-29
x= 54