问题描述:
(1)4.21*(-4/9)+4/7*(-2.79)+8*1/100
(2)(-1又3/4)-(+6又1/3)-2.25+10/3-5
(3)(-1又3/4)+(-6又1/3)+(-2.25)+10/3
(2)(-1又3/4)-(+6又1/3)-2.25+10/3-5
(3)(-1又3/4)+(-6又1/3)+(-2.25)+10/3
问题解答:
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