＝
+
+
+
+
+
+
+
+
﹣
= 1﹣
= 
﹣
= 1.25×8= 0.25+
=
+
= 0.6+
+0.4= 
+
= 
+= 1+
= 
﹣
= 
﹣
= 
+
= 
+
= 
+
= 
﹣
=
+
= 1﹣
= 
+
= 
+
= 
+
= 
+
= 
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