Mathematician

Let's turn this into an equation:

4 - x = 4

The x represents the amount he gave away.

If we take 4 away from both sides:

-x = 0

Therefore, by multiplication of both sides by -1:

x = 0

And so we have our answer, 0.

A fraction is just a division problem.

If you put a division sign ("/"), it will create a fraction.

Parenthesis in the numerator or denominator help if you have multiple terms.

A fraction is just a division problem.

If you put a division sign, it will be a "fraction sign"

Parenthesis in the numerator or denominator help if you have multiple terms.

I just know very basic trigonometry, but if normal tangent is opposite over adjacent side, I would guess inverse tangent would be adjacent over opposite side.

Thanks for catching that error, Dragonlance. I do have it backwards (but I think that's justified, since I just learned that basic trigonometry yesterday.)

What we have here is:

$${\frac{{\mathtt{1}}}{{\mathtt{2}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{8}}}}$$

The easiest method to do this is to convert them all to even denominators.

We can do that by multiplying them by multiples of two.

$${\frac{{\mathtt{1}}}{{\mathtt{2}}}}$$ * $${\frac{{\mathtt{4}}}{{\mathtt{4}}}}$$ = $${\frac{{\mathtt{4}}}{{\mathtt{8}}}}$$

$${\frac{{\mathtt{1}}}{{\mathtt{4}}}}$$ * $${\frac{{\mathtt{2}}}{{\mathtt{2}}}}$$ = $${\frac{{\mathtt{2}}}{{\mathtt{8}}}}$$

Now that they all have a denominator of eight, we can esily add the numerators:

$${\frac{{\mathtt{4}}}{{\mathtt{8}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{2}}}{{\mathtt{8}}}}{\mathtt{\,\small\textbf+\,}}{\frac{{\mathtt{1}}}{{\mathtt{8}}}}$$ = $${\frac{{\mathtt{7}}}{{\mathtt{8}}}}$$

2 - (5f - 1)

Looking at this, an imaginary one can be visualized behind the first minus sign.

2 - 1(5f - 1)

Now we can distribute the negative one to the five and negative one in the parenthesis. Since we're multiplying a negative number by a negative number, the result will be positive in the case of the negative ones.

2 - 5f + 1

To finish up, we can combine one and two, which are like terms, to get:

-5f + 3

Could you please not triple post for a question unrelated to math problems?

There is no point in asking again and again; they've already given answers the first two times around, and you will not get different answers by repetition.

Could you rephrase your question? I am a bit confused by the current phrasing.

Do you mean, "to change 16^8 to a base 4"

Or "to change 16^8 to a base with the digit 4"?

Or do you mean something else entirely?