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n=9. Because n+42=51. Subtract 42 from both sides and n=9

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What is 51 percent of 42?

To find 51 percent of a number, multiply the number by 0.51. In this instance, 0.51 x 42 = 21.42. Therefore, 51 percent of 42 is equal to 21.42.


What is the sum of -51 -9?

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The sum of the numbers between 51 and 150 is equal to 10050 - or 50 x 201 - as there are 50 lots of 201 in the sum.


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If we add 51 and 17 (51 + 17), we'd get 68 for an answer. The number 51 is 50 + 1, and the number 17 is 10 + 7, taking the units digits, 1 + 7 equals 8, and 50 + 10 equals 60. Further, 8 plus 60 is 68, so the sum of 51 and 17 is 68.


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