Answer:
The number is 3.
Step-by-step explanation:
To find : A number which decreased by 12 equals 3 times it’s opposite ?
Solution :
Let the number be 'x'.
It's opposite is '-x'.
A number which decreased by 12 equals 3 times it’s opposite
i.e. [tex]x - 12 = 3(-x)[/tex]
Solving the equation,
[tex]x-12=-3x[/tex]
[tex]x+3x=12[/tex]
[tex]4x=12[/tex]
[tex]x=\frac{12}{4}[/tex]
[tex]x=3[/tex]
Therefore, the number is 3.
