Directed numbers book print mistake?

[bronx.system]

please delete. i worked it out ^^

hey all i cant work out the answer in the book ): is it a misprint or am i doing it wrong

3 x -7
_____
42 / -3

 

[pka]

hey all i cant work out the answer in the book ): is it a misprint or am i doing it wrong

3 x -7
_____
42 / -3

I can't read it to be sure what it actually is. Here is my guess:

\(\displaystyle \dfrac{(3)(-7)}{\frac{42}{-3}}=\dfrac{-21}{-14}=\dfrac{3}{2}\)

Here is the LaTeX code:
\(\displaystyle \dfrac{(3)(-7)}{\frac{42}{-3}}=\dfrac{-21}{-14}=\dfrac{3}{2}[ /tex] leaving the space out of [ /tex]\)

 

[bronx.system]

I can't read it to be sure what it actually is. Here is my guess:

\(\displaystyle \dfrac{(3)(-7)}{\frac{42}{-3}}=\dfrac{-21}{-14}=\dfrac{3}{2}\)

Here is the LaTeX code:
\(\displaystyle \dfrac{(3)(-7)}{\frac{42}{-3}}=\dfrac{-21}{-14}=\dfrac{3}{2}[ /tex] leaving the space out of [ /tex]\)

\(\displaystyle

yeah that was right thank you

any suggested resource to learn latex?\)

 

[JeffM]

yeah that was right thank you

any suggested resource to learn latex?

Unless you are going to ask many questions or you are going to be writing mathematical papers, it may not be worth the effort to learn LaTeX.

Here is a page that gives many (possibly all) of the commands.http://www.artofproblemsolving.com/Wiki/index.php/LaTeX:Symbols

On this site, you start LaTeX with tex surrounded by square brackets and end it by /tex surrounded by square brackets.

But if you are just dealing with algebra, it probably is easiest to use PEMDAS, parentheses and brackets, ^ for exponentiation, * for multiplication, and / for division, all in line.

 

[bronx.system]

thank you

^^