Find three consecutive even integers such that the sum of the first, twice the second, three times the third is -76. What is the number?
(the three numbers is the same number)

Respuesta :

Answer:

The numbers are -14,-13 and -12

Step-by-step explanation:

The correct question is

Find three consecutive integers such that the sum of the first, twice the second and three times the third is -76. What is the number?

Let

x ----> the first consecutive integer

x+1 ---> the second consecutive integer

x+2 ---> the third consecutive integer

we have that

[tex]x+2(x+1)+3(x+2)=-76[/tex]

solve for x

apply distributive property

[tex]x+2x+2+3x+6=-76[/tex]

Combine like terms

[tex]6x+8=-76[/tex]

subtract 8 both sides

[tex]6x=-76-8[/tex]

[tex]6x=-84[/tex]

Divide by 6 both sides

[tex]x=-14[/tex]

so

[tex]x+1=-14+1=-13[/tex]

[tex]x+2=-14+2=-12[/tex]

therefore

The numbers are -14,-13 and -12