Multi-Equation Puzzles

Each of these puzzles is two puzzles in one. First, use all the digits and symbols given to form 3 correct mathematical equations. Then drop one of the digits, use the rest to form 3 different equations. An example of a solved puzzle is given below. Each puzzle below has a unique solution. All puzzles copyright Erich Friedman, 2010.

 0 1 1 1 2 3 4 7 7 9 + + × = = = → 0 + 1 = 1     1 + 2 = 3     7 × 7 = 49drop 0     2 + 7 = 9     3 + 4 = 7     1 × 1 = 1

 A.   1 2 3 4 5 5 6 8 9 9 + × × = = = B.   1 1 2 2 2 4 4 5 7 7 + + × = = = C.   1 1 3 4 5 5 6 6 7 8 + + × = = = D.   0 1 2 3 4 5 6 6 8 8 + × × = = = E.   2 2 3 4 4 5 7 8 8 9 + + × = = = F.   1 2 3 4 5 6 7 7 7 9 + + × = = = G.   1 1 1 2 4 4 5 6 8 9 + × × = = = H.   0 1 2 2 4 5 7 7 8 9 + + × = = = I.   0 2 2 2 3 4 4 6 6 7 7 + × × = = = J.   0 1 2 2 4 4 4 5 5 7 9 + + × = = = K.   0 2 3 4 5 6 6 6 7 8 9 + × × = = = L.   0 1 1 1 2 2 3 5 6 7 9 + × × = = = M.   0 1 1 2 3 5 7 7 7 9 9 + + × = = = N.   0 1 2 3 3 5 6 8 8 9 9 + × × = = =

See the solutions.

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