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12×3×10-(100+35÷5)=50×2+25×4+(309-200-8×7)

Răspuns :

12x3x10-(100+35:5)=
12x3x10-107=
36x10-107=
360-107=253


50x2+25x4+(309-200-8x7)=
50x2+25x4+(309-200-56)=
50x2+25x4+53=
100+100+53=253