Subtract a negative 1.
19 - (-1) = 20
20 - 19 = 1
-19
18
OK, SO 24 - 5 is 19, but how you get there is you count down so 24, 23, 22, 21, 20, 19. You can also do it by setting up a problem:24- 5____OK,SO You can't subtract 5 from 4 and get a positive number, you would get -1. So you borrow. Subtract 1 from the 2 in the tens place and bring that ten to the 4 temporarily to get 14. Then subtract 5 from 14, so 13, 12, 11, 10, 9 and put a 9 under than column. Then, subtract that one from 2 that you took, and your answer is 19! Hope this helps!
4a + 1 - a =19, rewrite your question, 4a + -a + 1 =19, 3a + 1 =19, subtract 1 from each side 3a = 18, divide by 3, a =6
um he is 20 now (2011) so in 2010 if u subtract 1 haha!
Multiply by 19 then divide the answer by 20. Incidentally, the word is "subtract".
19 + 1 = 20
20 - 19 = 1
-19
18
Answer: 19 20 - 1 = 19.
OK, SO 24 - 5 is 19, but how you get there is you count down so 24, 23, 22, 21, 20, 19. You can also do it by setting up a problem:24- 5____OK,SO You can't subtract 5 from 4 and get a positive number, you would get -1. So you borrow. Subtract 1 from the 2 in the tens place and bring that ten to the 4 temporarily to get 14. Then subtract 5 from 14, so 13, 12, 11, 10, 9 and put a 9 under than column. Then, subtract that one from 2 that you took, and your answer is 19! Hope this helps!
the answer is 20-19=1
The GCF of 19 and 20 is 1.
4a + 1 - a =19, rewrite your question, 4a + -a + 1 =19, 3a + 1 =19, subtract 1 from each side 3a = 18, divide by 3, a =6
You can subtract 2 from 21 a total of 10 times. This is because each time you subtract 2, you are left with 19, and you can repeat the process until you reach 1. Mathematically, this can be represented as 21 - 2 = 19, 19 - 2 = 17, and so on until you reach 1.