-20
52
Add them up. 16, 18, 20, 21, 22, 24
The composite numbers in that range are 10, 12, 14, 15, 16, 18, 20. I don't know if you're including 10 and 20 or not. Add them up however you like.
n + 20 - 17 + 13 - n = 20 - 17 + 13 = 3 + 13 = 16
20
-96
you work out 20% of 100 which is 20, then you work out 20 % of 80, which is 16, then you add 20 and 16 togethor, giving you 36.
20+16 = 36 20 - 16 = 4
-20
you add 3 then subtract7
52
Add them up. 16, 18, 20, 21, 22, 24
-48 -16 = 20 First add -48 and -16, which = -64, which indicates that this is not an equation, because both sides are not equal. -64 ≠20
The composite numbers in that range are 10, 12, 14, 15, 16, 18, 20. I don't know if you're including 10 and 20 or not. Add them up however you like.
n + 20 - 17 + 13 - n = 20 - 17 + 13 = 3 + 13 = 16
let x be the nuber.. by mistake he add 10 and subtracted 16,and that answer is 16.. so, x+10-16=14 ie, x=20 currect calculation is x+16-10 so the currect answer is 20+16-10 =26