问题
解答题
计算: (1)28
(2)0.75+(-
|
答案
(1)28
+(-171 4
)=101 2
;3 4
(2)0.75+(-
)+0.125+(-11 4
)+(-45 7
)1 8
=[0.75+(-
)]+[0.125+(-411 4
)]+(-1 8
)5 7
=-2-4-5 7
=-6
.5 7
计算: (1)28
(2)0.75+(-
|
(1)28
+(-171 4
)=101 2
;3 4
(2)0.75+(-
)+0.125+(-11 4
)+(-45 7
)1 8
=[0.75+(-
)]+[0.125+(-411 4
)]+(-1 8
)5 7
=-2-4-5 7
=-6
.5 7