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25+[30÷(6×5-25)+1]÷7=

Răspuns :

25+[30:(30-25)+1]:7=
25+[30:5+1]:7=
25+7:7=
25+1=
=26
25+[30:(30-25)+1]:7=
=25+(30:5+1):7=
=25+(6+1):7=
=25+7:7=
=25+1=
=26