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 exponent is exactly the same as a positive one with one major exception: a negative power means divide 1 by that number. Sounds complicated but if you see it it's much simpler. 2=2/1 25=25/1 2^2=(2^2)/1 25^2=(25^2)/1 2^-2=1/(2^2) 25^-2=1/(25^2)