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[(450-20×15)×16+2800+8×9]:659-84:7:3

Răspuns :


[(450-20×15)×16+2800+8×9]:659-84:7:3=
=[(450-300)×16+2800+72]:659-12:3=
=(150×16+2872):659-4=
=(2400+2872):659-4=
=5272:659-4=
=8-4=4