I suppose you mean 1/9 (the fraction one ninth). To get 1/9 of a number is the same as dividing that number by 9.
19/10 equals 1 with a remainder of 9
-19
48
19
10 + 9 = 19 19 - 6 = 13
19/10 equals 1 with a remainder of 9
19
56+19=75
-19
A=9 h=1 9+9+1=19
48
10 + 9 = 19
19
10 + 9 = 19 19 - 6 = 13
It equals you using the calculator on your computer.
In standard arithmetic, 9 + 10 actually equals 19, not 21.
4-2x-9 = -19 -2x = -19-4+9 -2x = -14 x = 7