seven seven
15 - 6 = 9
Let the number be x and so if 2x -7 = 15 then the value of x is 11
42-15=27
15 less than 7 times a number is:15-7n
seven seven
15 - 6 = 9
7+8=15 15-6=9
Let the number be x and so if 2x -7 = 15 then the value of x is 11
42-15=27
15 less than 7 times a number is:15-7n
That means that the sum of the number's factors, less than the number itself, is less than the number in question - in this case, if you add the factors of 15 (except 15 itself, which is also a factor of 15), you get a total that is less than 15.
No, however there are even numbers less than 15. An even number is any number that can be divided by two evenly, so it can be greater than 15 too.
x² - 15
25
'5' & '15' are odd numbers less than 20 , and are also multiples of '5'.
It is: 15-5 = 10