问题
解答题
(1)8×(-
(2)(-13
|
答案
(1)8×(-
)×(-4)×(-2)=-8×3 4
×4×2=-48;3 4
(2)原式=13
÷5+61 3
÷5=132 3
×1 3
+61 5
×2 3
=(131 5
+61 3
)×2 3
=20×1 5
=4.1 5
(1)8×(-
(2)(-13
|
(1)8×(-
)×(-4)×(-2)=-8×3 4
×4×2=-48;3 4
(2)原式=13
÷5+61 3
÷5=132 3
×1 3
+61 5
×2 3
=(131 5
+61 3
)×2 3
=20×1 5
=4.1 5