问题标题:
当x=|3又3/4|,y=-|-9又5/11|,z=-(+2.25),求(-x)+(-y)+z的值
问题描述:
当x=|3又3/4|,y=-|-9又5/11|,z=-(+2.25),求(-x)+(-y)+z的值
何宏回答:
x=3+3/4
y=-9-5/11
z=-2-1/4
-x+(-y)+z
=-3-3/4+9+5/11-2-1/4
=4-1+5/11
=3+5/11
=38/11
即3又11分之5
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