问题
解答题
(1)
(2)
(3)(
(4)(
|
答案
(1)
×3
=5
;15
(2)
+9a
=325a
+5a
=8a
;a
(3)(
+8
)×3
=6
+48
=418
+33
;2
(4)(
+3)×(2
-5)=2-52
+32
-15=-22
-13.2
(1)
(2)
(3)(
(4)(
|
(1)
×3
=5
;15
(2)
+9a
=325a
+5a
=8a
;a
(3)(
+8
)×3
=6
+48
=418
+33
;2
(4)(
+3)×(2
-5)=2-52
+32
-15=-22
-13.2