Question

Question #c79bc

Answer 1

Your sister's age is `9`
and your age is `14`

Explanation:

Let your sister's age be `x`
Your age is `x+5`

`2x+5=23`

So `x=9`

`x+5 = 14`

Answer 2

Sister is `9` years old and you are `14` years old

Explanation:

Let your sister's age be `x`

Then, you are `x+5` years old if your sister is `x` years old

`:.(x+5)+x=23`

`:.2x+5=23`

`:.2x=23-5`

`:.2x=18`

`:.x=9` your sister's age

check:

substitute `x=9`

`(9+5)+9=23`

`14+9=23`

`23=23`

your age`:.=(x+5)=9+5=14` years old.