How do I write the opposite of a rational number?

Question

Write the opposite of each rational number

A)$ 9$

B)$-17.6$

C) $6.12 $

D) $-7 \frac{5}{7 }$

Some one please help! I am not doing very good in Math I'm in grade 9 and I'm struggling I would highly appreciate if someone would help me out. Thanks for taking your time to read this:)

The opposite of a number means change its sign. So a positive becomes negative and vice versa — imranfat, Sep 30 '15 at 03:09
You have butchered your own post. Your initial question was fine (though your title needed work), but butchering posts is highly discouraged by this community. It makes us unwilling to help. — Cameron Williams, Sep 30 '15 at 03:11
Sorry I just feel that it didn't make sense but other people may not feel the same sorry — Sally, Sep 30 '15 at 03:32
It's my first time ever using this and I needed some help because I'm clueless on this new lesson so if I discouraged anyone on here I'm very sorry. — Sally, Sep 30 '15 at 03:35

score 0 · Accepted Answer · answered Sep 30 '15 at 03:38

Just change the sign. Remember, if there is no sign shown, it's positive. (I like to say there is an invisible $+$ sign.)

So, if the value is +'ve, it becomes -'ve; and -'ve becomes +'ve.

Note that finding the opposite is the same as multiplying by $-1$.

How do I write the opposite of a rational number?

1 Answers1