问题
解答题
(
|
答案
(
+1 6
-1 9
)×4×9,1 12
=(
+1 6
-1 9
)×(4×9),1 12
=(
+1 6
-1 9
)×36,1 12
=
×36+1 6
×36-1 9
×36,1 12
=6+4-3,
=10-3,
=7.
(
|
(
+1 6
-1 9
)×4×9,1 12
=(
+1 6
-1 9
)×(4×9),1 12
=(
+1 6
-1 9
)×36,1 12
=
×36+1 6
×36-1 9
×36,1 12
=6+4-3,
=10-3,
=7.