Question

6*6²

.算了好久...
[-5*（-1/3）²-0.8]/5又2/5
[50-（7/9-11/12+1/6）*（-6）²]/（-7）²

Answer 1

[-5*（-1/3）²-0.8]/5又2/5=（-5*1/9-4/5)/27/5=(-25/45-36/45)*5/27=-61/45*5/27=-51/243
[50-（7/9-11/12+1/6）*（-6）²]/（-7）²=[50-(7/9-9/12)*36]/49=(50-28+27)/49=1