-14×3/4-0.34×3/7+1/4×(-14)+4/7×-0.34(简便)

问题描述:

-14×3/4-0.34×3/7+1/4×(-14)+4/7×-0.34(简便)

-14×3/4-0.34×3/7+1/4×(-14)+4/7×-0.34
=-14x(3/4+1/4)-0.34x(3/7+4/7)
=-14-0.34
=-14.34