Question

Which of the following equations will lead you to find the number of books bought by one of two sisters, if the other one bought 8 books and together they bought 20 books?

Answer 1

Given:

One of two sisters, if the other one eight books and together they bought 20 books.

Find-:

The equations will lead find the number of books

Explanation-:

Let the one sister bought "x" is,

Together bought is 20 books

If the other one bought 8 books

`x=20-8`

So, the equation is:

`\begin{gathered} x=20-8 \\ \\ x+8=20 \end{gathered}`

The equation is x + 8 = 20