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20+{15-[10+(5-4÷2)]}

Răspuns :

20+{15-[10+(5-4÷2)]}=
=20+[15-(10+3)]=
=20+12=
=32

Sper ca te-am ajutat! ^^
20+{15-[10+5-2]}=
=20+{15-13}
=20+2=
=22