Respuesta :
In this case, use variables to represent the numbers, Fortunately, they are all in terms of the smaller number. So. let....
x = small number
(x+3) = middle number
2x = large number
If the sum is 75, then all of the numbers added together must equal this. So......
x + (x+3) + 2x = 75
4x + 3 = 75
4x = 72
x = 18
After we find x, we can conclude that..
Smaller number = 18
Middle number = 21
Large number = 36
The relationship between the three numbers is represented by an equation. The numbers are 18, 21 and 36
Let the three numbers in ascending order be x, y and z.
So:
[tex]z = 2x[/tex]
[tex]y = 3 + x[/tex]
[tex]x + y + z = 75[/tex]
Substitute values for y and z in [tex]x + y + z = 75[/tex]
[tex]x + 3 +x + 2x = 75[/tex]
Collect like terms
[tex]x + x + 2x = 75 - 3[/tex]
[tex]4x = 72[/tex]
Divide both sides by 4
[tex]x = 18[/tex]
Recall that: [tex]z = 2x[/tex] and [tex]y = 3 + x[/tex]
[tex]z = 2\times 18[/tex]
[tex]z = 36[/tex]
[tex]y = 3 + 18[/tex]
[tex]y = 21[/tex]
Hence, the numbers are 18, 21 and 36
Read more about equations at:
brainly.com/question/9585437