-1²-[1又3/7+(-12)÷6]²×(-3/4)³

问题描述:

-1²-[1又3/7+(-12)÷6]²×(-3/4)³

-1²-[1又3/7+(-12)÷6]²×(-3/4)³
=-1-(1+3/7-2)²×(-27/64)
=-1-16/49×(-27/64)
=-1+27/196
=-169/196;