16 !
It is: 60-16 = 44
40 -16 =24
140 - 16 = 124
if Dana have 45$ take away 16$ its =31
15,587,000,000,000
Yes, you can take away a 16-year-olds school text-books. If you bought it and have good reason to retreive it than you take it back.
-7
the aswer is 6547293.453182336543264
16 + 9 - 4 = 21
17
7-5=2