计算:(-1/30)/(2/3-1/10+1/6-2/5)

问题描述:

计算:(-1/30)/(2/3-1/10+1/6-2/5)

(-1/30)/(2/3-1/10+1/6-2/5)
=1/30÷(1/10-2/3-1/6+2/5)
=1/30÷(-1/3)
=-1/10