10 + 11 = 21
11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
no 9 + 10 = 19 11 + 10 = 21 9 + 12 = 21
-10
Expressed as a proper fraction in its simplest form, 10/15 + 4/14 = 20/21.
-21
10 + 11 = 21
11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
no 9 + 10 = 19 11 + 10 = 21 9 + 12 = 21
73
n=10
24
55 + 34 + 31 + 27 + 21 + 21 + 20 + 17 + 15 + 15 = 256
24 + 23 + 22 + 21 + 20 + 19 + 18 + 17 + 16 + 15 + 14 + 13 + 12 + 11 + 10 + 9 + 8 + 7 + 6 + 5 + 4 + 3 + 2 + 1 = 300
Yes, because 11 + 15 > 21, 11 + 21 > 15, and 15 + 21 > 11
-10
t + 10 - 4t = -11 Subtract 10 from each side: t - 4t = -21 ie -3t = -21 t = -21/-3 t = 7.