salemreese1019 salemreese1019

05-09-2020
Mathematics

contestada

i know im asking alot of questions im sorry Colton is 20, which is 2 years older than twice his sister Sammi’s age. How old is Sammi? Enter your answer in the box.

Respuesta :

itsjared itsjared

05-09-2020

Answer: 9 years old

Step-by-step explanation:

Step 1: Take Colton's age (20) and set it equal to Sammi's age (in this case, [tex]2x+2[/tex])

[tex]20=2x+2\\[/tex]

Step 2: Subtract 2 from both sides

[tex]18=2x[/tex]

Step 3: Divide both sides by 2

[tex]9=x[/tex]

Colton: 20 years old

Sammi: 9 years old

Answer Link

damiagunn27 damiagunn27

05-09-2020

Answer:

Step-by-step explanation:

2x+2=20

x=9

Answer Link

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