Răspuns :

(99×99-99:9)-[83-27:3)×10+2×35]=210

(891-99:9)-(83-27:3)×10+2×35

(891-11)-(83-27:3)×10+2×35

(891-11)-(83-9)×10+2×35

(891-11)-(83-9)×10+70

880-(83-9)×10+70

880-74×10+70

880-740+70=210