21
minus 21 think of it as 12+9 which equals 21 then just whack a minus sign infront
Eighteen minus a negative 3 is twenty-one (21).
- 21
4/3 minus 5/7 = 13/21
x2 - 4x - 21 = (x-7)(x+3)
If: 24 = 6-x-3 Then: x = -21
3 - 21/3 = 2/3.
42/3- 21/3 =21/3
87/21 - 73/21 = 14/21 = 2/3
21-5= 16x3= 48 The correct answer of 21 minus 5 times by 3 is 48.
2/3 = 14/21 1/7 = 3/21 The answer is 4 and 11/21