问题
解答题
计算: (1)(
(2)-14-[1-(1-0.5×
(3)-22-(-3)3×(-1)4-(-1)5 (4)(-
|
答案
(1)(
-7 12
+5 6
)×(-12)÷(-6)3 4
=(
-7 12
+5 6
)×(-12)×(-3 4
)1 6
=(
-7 12
+5 6
)×23 4
=2×
-2×7 12
+2×5 6 3 4
=
-7 6
+5 3 3 2
=1;
(2)-14-[1-(1-0.5×
)]×[2-(-3)2]1 3
=-1-(1-1+0.5×
)×(2-9)1 3
=-1-
×(-7)1 6
=-1+7 6
=
;1 6
(3)-22-(-3)3×(-1)4-(-1)5
=-4-(-27)×1-(-1)
=-4+27+1
=24;
(4)(-
)×(-34)-5 23
×17-5 23
×(-6)5 23
=
×(34-17+6)5 23
=
×235 23
=5.