2x+13
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If ten times the number n decreased by 13 is equal to the square of the same number n increased by 3, then the value of n is either 8 or 2.
x = 8, y = 5
13 less than 4 times a number 13 less than is "-13" 4 times a number is "4x" 4x-13■
if the number is the same: 2x + 3x = 13 5x = 13 x= 13/5
It is: 1 times 13 = 13 which is a prime number