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+//Ex19_28 Pg-998
+clc
+
+disp("AB + A(B + C) + B(B + C)  = AB + AB + AC + BB + BC")
+//using distributive law
+disp("                          = AB + AC + B +BC      ")
+//using law 6
+disp("                          = AB + AC + B(1 + C)  ")
+//taking common B from B + BC 
+disp("                          = AB + AC + B")
+//using law 7 
+disp("                          = B(A + 1) + AC")
+//taking common B from AB + B
+disp("                          = B + AC")
+//using law 7
+disp("Therefore AB + A(B + C) + B(B + C) = B + AC")