Magic equations

Example

+
+
=
72
 
+
+
=
75
 
+
+
=
52
 
+
-
=
 
 
 
 
 
 
 
 
 

Solution

+
+
=
72
 
+
+
=
75
 
+
+
=
52
 
+
-
=
39
 
 
 
25
 
22
 
8
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Magic equations
Magic equations

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