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diff --git a/1553/CH7/EX7.5/7Ex5.sce b/1553/CH7/EX7.5/7Ex5.sce
new file mode 100644
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+//Chapter 7 Ex5
+clc;
+clear;
+close;
+//let numbers be x and y
+
+x=poly(0,'x');
+y=x-11;        //equation 1
+y=45-x;    //equation 2
+for x=1:99
+  if x-11 ==45-x
+    mprintf("x=%i \n ",x)
+    break
+  end
+end
+disp("substitute the x value in any one of the above equationsto find y.");
+y=x-11;
+printf("\nThus the numbers are %d and %d: \n",x,y);
+
+