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Target question:Is x - y + 1 > x + y - 1 ? This is a good candidate for rephrasing the target question.
Take: x - y + 1 > x + y - 1 Subtract x from both sides to get: -y + 1 > y - 1 Add y to both sides to get: 1 > 2y - 1 Add 1 to both sides to get: 2 > 2y Divide both sides by 2 to get: 1 > y REPHRASED target question:Is y < 1?
The video below has tips on rephrasing the target question
Statement 1: x > 0 Since we have no information about y, we cannot answer the REPHRASED target question with certainty Statement 1 is NOT SUFFICIENT
Statement 2: y < 0 In other words, y is NEGATIVE If is NEGATIVE, then y is definitely less than 1 So, the answer to the REPHRASED target question is YES, y IS less than 1 Since we cannot answer the target question with certainty, statement 2 is NOT SUFFICIENT
Re: Is x-y+1 greater than x+y-1 ? (1) x > 0 (2) y < 0
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06 Jun 2019, 02:54
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