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If you’ve been reading my solutions and justifications for previous puzzles, this week’s puzzle should not pose any challenge:
Here, now, the solution to last week’s puzzle:
Once more, we have a puzzle involving order of operations. There are neither parentheses nor exponents, so we go right on to multiplications (7 * 7 = 49) and divisions (7 / 7 = 1). On to additions and subtractions, giving us the following final calculation: 7 + 1 + 49 -7, which equals 50.