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(123x15-1 800):5-70:7:5=

Răspuns :

(123×15-1800):5-70:7:5=
(1845-1800):5-70:7:5=
45:5-70:7:5=
9-70:7:5=
9-10:5=
9-2=
7
(1845-1800):5-70:7:5
45:5-10:5
9-2
7