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75:{30-[24x(20-12:Xx3)]:12+7}+3=8

Răspuns :

75:{30-[24x(20-12:Xx3)]:12+7}+3=8
75:{30-[24x(20-12:Xx3)]:12+7}=5
[30-24x(20-12:Xx3):12+7]=455
(30-24x20-12:Xx3:12+7)=455
(480-30-12:Xx3:12+7)=455
450-12:Xx3:12+7=455
450-12:Xx3:12=448