Vitamins are classified as either fat soluble (vitamins A, D, E and K) or water soluble (vitamins B and C). This difference between the two groups is very important. It determines how each vitamin acts within the body.
Rule 3: Subtracting a negative number from a negative numberâwhen you see the subtraction (minus) sign followed by a negative sign, turn the two signs into a plus sign. Thus, instead of subtracting a negative, you are adding a positive.So, â -5 becomes +5, and continue normally with the addition.ou can also think about these problems as addition problemsâyou add the numbers together (5 + 3 = 8) and then, since both numbers have a minus sign in front of them, you would add a negative sign in front of your answer, like this: -8.
A negative number is a number below zero. It can be an integer or a decimal and is written with a minus sign (-) in front of it, like this: -3. You can get an idea of what a negative number is with a number line, like this one: ---|---|---|---|---|---|---|---|---|---|---|---|---|---|- ... -7 -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 You can see from this number line that you can continue counting down when you get to zero.