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31.  23+31+((14 x 16) x 5) -31x2= 23+31+1120-62 =1112
32.  28 x 25 - (46+235+154)= 700 - 435 = 265
33. 2688 : 16x(-8)= 168 x (-8) = -1344
34. (5-129-3215) : (-6) x 16 =-3339 : -96 = 34,781