神机妙算细又巧（能简算的要写出简算过程）①0.65×14+87×65%−1320②(23−12+16)÷124③76×(123−153)+23×(153+176)−53×(123−176)．

Question

神机妙算细又巧（能简算的要写出简算过程）
①0.65×14+87×65%−(13)/(20)
②((2)/(3)−(1)/(2)+(1)/(6))÷(1)/(24)
③76×((1)/(23)−(1)/(53))+23×((1)/(53)+(1)/(76))−53×((1)/(23)−(1)/(76))．

Answer 1

①0.65×14+87×65%−1320=0.65×14+87×0.65-0.65，=0.65×（14+87-1），=0.65×100，=65；②(23−12+16)÷124=（23-12+16）×24，=23×24-12×24+16×24，=16-12+4，=8；③76×(123−153)+23×(153+176)−53×(123...