Question

Bo's sister Anna is

his age minus 1 year(s). She is 11 years old.

Write an equation to find Bo's age, X.

Answer 1

11+1=x is the equation

Answer 2

Answer:

11 = x - 1

Step-by-step explanation:

We know that Anna is 1 year younger than Bo

We also know that Anna is 11 years old

We can use this info to set up an equation...

( Anna's age ) ( Bo's age ) ( difference between ages )

       ⇩                   ⇩                    ⇩

       11            =       X          -           1

                                          ⇧

( we used subtraction sign to show that Anna's age is less )

We can test this out too!! by using simple maths we can hypothesize that Bo must be 12 years old since his sister is 1 year younger and currently 11

now we solve the equation we made...

11 = x - 1

Add one to both sides

+1  = +1

and our result is

12 = x

Meaning Bo is 12 years old.

I hope this helps you understand!! :)