19
No, 10 plus 9 cannot equal 21. The correct sum of 10 and 9 is 19. The statement that 10 plus 9 equals 21 is mathematically incorrect.
1 plus negative 10 is equal to -9.
11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
no 9 + 10 = 19 11 + 10 = 21 9 + 12 = 21
2x+10=9+11-3x2x+10=20-3x5x+10=205x=10x=2
No, 10 plus 9 cannot equal 21. The correct sum of 10 and 9 is 19. The statement that 10 plus 9 equals 21 is mathematically incorrect.
1 plus negative 10 is equal to -9.
48 plus 22 plus 10 plus 10 plus 9 plus 1 is equal to 100.
11 plus 5-10 plus 20-9 plus 14-10 is equal to 21
Yes, since 10-1 = 9
no 9 + 10 = 19 11 + 10 = 21 9 + 12 = 21
No it would equal +8
Expressed as a decimal, 17 + 9/10 is equal to 17.9.
2x+10=9+11-3x2x+10=20-3x5x+10=205x=10x=2
7/10 + 2/10 = 9/10
35
9 + 9 + 10 + 10 = 38