kitty<3

5(1/4)-2(1/8)-(1/6)

First of all I'm going to assume that you mean 5 times (1/4) minus 2 times (1/8) minus (1/6), with no mixed numbers.

5* (1/4) - 2(1/8) - (1/6)

One of the ways to go about solving this problem would be to directly multiply out the terms first, instead of making the denominators of the fractions the same.

So:

$${\mathtt{5}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{4}}}}\right) = {\frac{{\mathtt{5}}}{{\mathtt{4}}}}$$

$${\mathtt{2}}{\mathtt{\,\times\,}}\left({\frac{{\mathtt{1}}}{{\mathtt{8}}}}\right) = {\frac{{\mathtt{1}}}{{\mathtt{4}}}}$$

And  $${\frac{{\mathtt{5}}}{{\mathtt{4}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{1}}}{{\mathtt{4}}}} = {\frac{{\mathtt{4}}}{{\mathtt{4}}}}$$ = 1

Now 1 is the same as 6/6

So:   $${\frac{{\mathtt{6}}}{{\mathtt{6}}}}{\mathtt{\,-\,}}{\frac{{\mathtt{1}}}{{\mathtt{6}}}} = {\frac{{\mathtt{5}}}{{\mathtt{6}}}}$$

   It's the economy. . .

Hi Melody,

I think they mean how to store a variable/answer on a calculator(?)

On scientific calculators, there is a M+ button that you press to store an answer. To retrieve the answer, press MR and to clear the memory, press M-

On a graphing calculator, press the STO-> button and enter any letter (alpha, letter) to store your answer. When you need to use the answer, simply enter it in as that letter.

Divide 18 by 72:

$${\frac{{\mathtt{18}}}{{\mathtt{72}}}} = {\frac{{\mathtt{1}}}{{\mathtt{4}}}} = {\mathtt{0.25}}$$

0.25 is the same as 25%

I see I missed the party. . . this is inevitably what happens when you catnap;)

Constable Grammar, sir, while I do appreciate your rather artistic sentences,  I also appreciate all the hard work that many answerers here have put into their posts. While correct grammar is definitely an important aspect of well, life, on a busy math forum we can overlook this small element in the answers, can't we?

And to CPhill (Mr. Seephil) and others it may concern, I really do apologize if I have "shown out" with all my fanciful grammar. It was quite naturally done with no disrespect intended. Honestly, it is simply never a good idea to throw a cat among the pigeons.

Es 0.333333333... o $${\frac{{\mathtt{1}}}{{\mathtt{3}}}}$$

Hola,
1) el producto de dos numeros enteros negativos es mayor que 0, porque un numero negativo multiplica con un numero negativo es positivo.

2) el opuesto de un numero entero es siempre menor que cero, sólo si el numero entero es positivo.

3) el producto entre un numero A y -1 es igual al opuesto de A
Si A es un numero positivo, lo multiplica con -1 es negativo. Entonces, es el opuesto de A.

4)  el cociente entre un numero entero (distinto de cero) y su recíproco es 1, porque es el mismo que el número dividido por sí mismo.

5) la diferencia entre un numero y su opuesto es igual a cero, porque es el mismo que  el número resta de el mismo número.

Ésta es tu tarea? :/

Sí,  es una fracción irreducible, porqué 23 es un número primo.