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24×12-18:9:2+2×(40-80:2)=

Răspuns :

24×12-18:9:2+2×(40-80:2)=
=288-2:2+2×(40-40)
=288-1+2×0
=288-1+0
=287
288-1+2×(40-40)
288-1+2×0
288-1+0=
287........