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The three boxes 1,2,3 has values resp. AB,BC,AC Get 2A(B+C)
+AC-2C(A-B)in Box 1 using only addition in 3 steps.

Answer Posted / vinay upadhyay

2A(B+C)+AC-2C(A-B)
=2AB+2AC+AC+2AC+2BC
=2AB+2BC+AC

b1 b2 b3
AB BC AC

STEP1 b1=b1+b1+b2

b1 b2 b3
2AB+BC BC AC

STEP2 b2=b1+b2

b1 b2 b3
2AB+BC 2AB+2BC AC

STEP3 b3=b2+b3

b1 b2 b3
2AB+BC 2AB+2BC 2AB+2BC+AC

Is This Answer Correct ?    8 Yes 6 No



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