x + 16 < 15
Subtract '16' from both sides
x< 15 - 16
x < -1
Verification
When x = -2
Then -2 + 16 = 14 < 15
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15 + 1 = 16, and 15 - 1 = 14, so the two numbers are 15 and 1.
The only squares of perfect squares in that range are 1, 16, and 81.
x + (x - 3) = 16 ? Let's suppose that this is true. 2x - 3 = 16 2x = 19 x = 9.5 Check: 9.5 - ( 9.5 - 3) = 16 ? 9.5 + 6.5 = 16? 16 = 16
The numbers are -16 and -15.
It must be less than or equal to the smallest of the set of numbers whose GCF you are trying to obtain. So it must be less than or equal to 16. Furthermore, it is not 16 because 16 is not a factor of 42. Therefore, it must be less than 16.