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[(x*7+x*34+x*26-74)impartit la 4+6]impartit la 3*10=70
ajutor


Răspuns :

[(7x+34x+26x-74):4+6]:3*10=70
[(7x+34x+26x-74):4+6]:3=70:10=7
(7x+34x+26x-74):4+6=7*3=21
(7x+34x+26x-74):4=21-6=15
7x+34x+26x-74=15*4=60
67x-74=60
67x=60+74
67x=134
x=134:67
x=2