✒️[tex]\large{\mathcal{ANSWER}}[/tex]
[tex]======================[/tex]
That number we're looking for is 3 . But let's call it unknown X, this exercise deals with a first-degree equation, let's interpret what the statement tells us to build a numerical expression.
- Double a number will be represented as : 2x.
- And this double of that number was decreased from 5 , therefore : 2x - 5.
- And the result of this subtraction is equal to 1 , so : 2x - 5 = 1
[tex]------------------[/tex]
Now we're just going to solve this first degree equation.
● And how do we do this?
- It is quite simple , notice that in this equation , there is the unknown x , and there are numbers without the unknown x , as a rule , everything that has a letter is on one side of the equation , and everything that does not have a letter is on the other side of the equation . equation , but when we move a term from the equation to the other side , we will also change its sign , that is , if on one side a term is adding , it will move to the other side by subtracting , if it is multiplying it moves to the another side dividing , knowing that , we have to :
[tex]2x - 5 = 1 \\ 2x = 1 + 5 \\ 2x = 6 \\ 6 = \frac{6}{2} \\ \: \boxed{x = 3} [/tex]
● Just to confirm, let's change "x" to 3:
[tex]2x - 5 = 1 \\ 2 \times 3 - 5 = 1 \\ 6 - 5 = 1 \\ \: \boxed{1=1} [/tex]
Proven through calculations , the number we want to find is 3 .
[tex]−−−−−−−✠−−−−−−−[/tex]
Good studies and I hope I have helped.
