更新时间2020-10-28 12:06:13
还要过程
(-½)-(-2⅓)+2¾+(-7/8)-3⅔
=-1/2+(2+1/3)+(2+3/4)-7/8-(3+2/3)
=-1/2+2+1/3+2+3/4-7/8-3-2/3
=2+2-3-1/2+3/4-7/8+1/3-2/3
=1-4/8+6/8-7/8-1/3
=1-5/8-1/3
=1-15/24-8/24
=1-23/24
=1/24
(-½)-(-2⅓)+2¾+(-7/8)-3⅔
=-0.5+2⅓+2.75-7/8-3⅔
=2.25+7/3-11/3-7/8
=9/4-4/3-7/8
=54/24-32/24-21/24
=1/24