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diff --git a/2825/CH19/EX19.27/Ex19_27.sce b/2825/CH19/EX19.27/Ex19_27.sce
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+//Ex19_27 Pg-997
+clc
+
+disp("(A+B)(A+C) = AA + AC + AB + BC ")
+//by distributive law
+disp("           = A + AC + AB +BC")
+//by theorem(6)
+disp("           = A(1 + C) + AB + BC")
+//by distributive law
+disp("           = A.1 + AB + BC ")
+//by theorem(3)
+disp("           = A(B + 1) + BC")
+//by distributive law
+disp("           = A + BC")
+disp("Therefore (A+B)(A+C) = A + BC")