If you have a number x, then twice that number is 2*x and so the expression means 42 - 2*x
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No because 11/42 is a rational number
The number is 55. 55 - 13 = 42.
To find the number that 42 is 75% of, you can set up a proportion. Let x represent the unknown number. The proportion would be: 42 = 0.75x. To solve for x, divide both sides by 0.75, giving you x = 42 / 0.75 = 56. Therefore, 42 is 75% of 56.
There are different ways to write the answer: n+n+8 = 42 or 2n + 8 = 42