问题
解答题
|
答案
(1)
×1 3
+3 7
÷5 6 5 12
=
+1 7
×5 6 12 5
=
+21 7
=21 7
(2)(
-11 12
)×(1-1 4
)2 3
=
×2 3 1 3
=2 9
(3)
×(3 4
-2 3
)÷2 5 4 11
=
×3 4
×4 15 11 4
=11 20
(4)
÷4 5
-7 4
×4 5 3 7
=
×4 5
-4 7
×4 5 3 7
=
×(4 5
-4 7
)3 7
=
×4 5 1 7
=4 35