问题
解答题
计算: (1)(-11
(2)-8-[-7+(1-
|
答案
(1)(-11
)×1 7
+(+51 5
)×1 7
+(-1371 5
)÷5+(+1131 3
)÷51 3
=(-11
)×1 7
+(+51 5
)×1 7
+(-1371 5
)×1 3
+(+1131 5
)×1 3 1 5
=
×[(-111 5
)+(+51 7
)+(-1371 7
)+(+1131 3
)]1 3
=
×[-6+(-24)]1 5
=
×(-30)1 5
=-6.
(2)-8-[-7+(1-
×0.6)÷(-3)]2 3
=-8-[-7+(1-
×2 3
)×(-3 5
)]1 3
=-8-[-7+(1-
)×(-2 5
)]1 3
=-8-[-7+
×(-3 5
)]1 3
=-8-(-7-
)1 5
=-8+71 5
=-
.4 5