4
Just once. Because the number is now 30 and not 32. So, it is impossible to subtract from it again.
32 32
You will get a positive integer. If you subtract a negative number, you will be adding it. I think of it like 2 minuses equals a plus. :P
0
32
Negative 23 + 32 minus 18 = negative 9 {-23+32-18=-9)
130
if you subtract 612 from 32 and get a positive answer then 32 would be larger than 612. If the answer is negative it is smaller.
-14
19/6 = 57/18 16/9 = 32/18 57 - 32 = 25 25/18 = 1 and 7/18
12x21/18+29-11= 32
an example is 11 + -18 first you subtract 11 from 18 and get -7 now since you know that 7 is your answer this is how you got it keep 11 and change the additon sign(+) to a subtraction sign(-) then change negative eighteen (-18) to positive eightteen(18) know subtract 11-18 and you get -7
To convert from Fahrenheit to Celsius... subtract 32 then divide that answer by 1.8. For example - say you had the temperature 50... 50 - 32 = 18.... 18 / 1.8 = 10
-5
A negative.
to solve 18-70 you would subtract just like any other equation. 18-70 is equal to a negative number, -52.