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.
= 4. 7. |0|=0. Since 5 > 0 Since â4. 7 < 0 Since 0 â¥ 0. Note that the effect of taking the absolute value of a number is to strip away the minus. sign if the number is negative and to leave the number unchanged if it is nonnegative. Example 2 Solve |x â3|=4. Solution. Depending on whether x â3 is positive or negative, the equation | 3|=4.