91Ó°ÊÓ

Real numbers are simply the combination of Whole numbers, Integers, Rational and Irrational numbers in the number system.

Suppose a, b, and c is three real numbers.

Distributive Property of Multiplication

Property: $-\text{a}  \text{(b}  -  \text{c}  \text{)}  =  (-\text{a} ) ·  b -   (-\text{a} ) ·  \text{c} $

Example: $-\text{3}  \text{(8}  -  \text{5}  \text{)}  =  (-\text{3} ) ·  8 -   (-\text{3} ) ·  \text{5}  =  -24+15=-  9$

We know that double negative is always positive. $-   \text{4}  ·  - \text{7}  =  +  28$

Distributive Property of Multiplication

Property: $-\text{a}  \text{(b}  -  \text{c}  \text{)}  =  (-\text{a} ) ·  b -   (-\text{a} ) ·  \text{c} $

$\begin{array}{l}\text{ â¶Ä‰}−\text{ â¶Ä‰4 â¶Ä‰(2n â¶Ä‰}−\text{ â¶Ä‰7 â¶Ä‰) â¶Ä‰}=\text{ â¶Ä‰}−\text{ â¶Ä‰4 â¶Ä‰}·\text{ â¶Ä‰}2n\text{ â¶Ä‰}−\text{ â¶Ä‰â€‰4 â¶Ä‰}·\text{ â¶Ä‰}−\text{ }7\text{ â¶Ä‰}=\text{ â¶Ä‰}−\text{ â¶Ä‰}8\text{ }n\text{ â¶Ä‰}+\text{ â¶Ä‰}28\text{ â¶Ä‰}\\ −\text{ â¶Ä‰4 (2n â¶Ä‰}−\text{ â¶Ä‰7 â¶Ä‰) â¶Ä‰}=\text{ â¶Ä‰}−\text{ â¶Ä‰}8n\text{ â¶Ä‰}+\text{ â¶Ä‰}28\end{array}$