17.35k
15.46k
= 
(3)
+3-(
+
)
=
+3-
- 
=
-
-
+3
=
-
+3
=0+3
=3
(4)
×
×
- 
=
×
×
- 
=
- 
=
- 
= 
(5)
+(
-
)÷ 
=
+
÷ 
=
+ 
= 
(6)
+(
+
)× 
=
+
×
+
× 
=
+
+ 
=
+
+ 
= 
= 
26. (1) 23+3x=41.6
解:3x=41.6-23
3x=18.6
x=6.2
(2) 1.2x-x=1.04
解:0.2x=1.04
x=5.2
(3) 
解: 

五、解答题
27.①4+0.5×6=7(平方厘米)
②6×1=6(平方厘米)
③5+0.5×2=6(平方厘米)
答:①图形的面积是7平方厘米.②图形的面积是6平方厘米.
28. (1)解:

(2)作图如下: