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sveticcg [70]
3 years ago
13

What kind of number is -5? Is it rational or something like that?

Mathematics
2 answers:
Arte-miy333 [17]3 years ago
6 0
ANSWER
-5 is a real number, a rational number, and an integer

EXPLANATION
Rational number are numbers which you can write as a quotient of two integers. Integers are non-decimal numbers that can be positive or negative. We can therefore write -5 as -5 divided by 1 (-5/1) and thus classify -5 as rational.

In fact, you can classify -5 into other categories.

-5 is all of the following
⇒ it is a real number
⇒ it is a rational number
⇒ it is an integer

Whole numbers can be considered as {0, 1, 2, 3, ...}
Natural numbers can be considered as {1,2,3,...}

so -5 is not a whole or natural number.

\boxed{ \begin{array}{l r} \textbf{real numbers } (\mathbb{R}) \\ \boxed{ \begin{array}{l} \textbf{rational numbers } (\mathbb{Q}) \\ \boxed{ \begin{array}{l} \textbf{integers } (\mathbb{Z})\\ \boxed{ \begin{array}{l} \text{\footnotesize whole numbers ($\mathbb{W}$)} \\ \boxed{ \begin{array}{l} \text{\scriptsize natural numbers ($\mathbb{N}$)} \end{array}} \end{array}} \end{array}} \end{array}} & \boxed{ \begin{array}{c} \text{irrational numbers} \\ \ \\ \ \\ \ \\ \ \end{array}} \end{array}}
babymother [125]3 years ago
4 0
The number -5 is anything but natural number.
It is an integer (Z) ,a rational number (Q) and a real number (R) .

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Answer:

  1. \huge{x =  -  \frac{5}{4}  +  \frac{7}{4} y}
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Step-by-step explanation:

1. 4x - 7y =  - 5

4x =  - 5 + 7y

\boxed{\green{x =  -  \frac{5}{4}  +  \frac{7}{4} y}}

y E R

○○•○○

2. 3x - 2y =  - 7

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Step-by-step explanation:

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