5.85x1/3+2.2/(5/6)=5.85x1/3+2.2x(6/5) 再怎么简算跟没有一样嘛(3.38+1.2)x3/4-10x3/4=(3.38+1.2-10)x3/4=-5.12x3/4 11/15+（3/4-2/3）x5=11/15+15/4-2/15=9/15+15/4=3/5+15/4=(12+75)/20=87/208/9x(3/4)÷（7/16-1...