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a fost răspuns

10+13+(23+4):3-[64:8-15:5]:5

Răspuns :

10+13+(23+4):3-(64:8-15:5):5=
23+27:3-(8-3):5=
23+9-5:5=
32-1=31
10+13+(23+4):3-[64:8-15:5]:5=
=10+13+(23+4):3-5:5=
=10+13+27:3-5:5=
=10+13+9-1=
=23+9-1=
=32-1=
=31