1/4+{-3 1/3}+{+4 3/4}+{-6 2/3}

问题描述:

1/4+{-3 1/3}+{+4 3/4}+{-6 2/3}

1/4+{-3 1/3}+{+4 3/4}+{-6 2/3}
=1/4 +(-1)+ 3 +(-4)
=1/4 - 2
=-7/4