Question

(a) Write an equation that could be used to answer the question above.First, choose the appropriate form. Then, fill in the blanks with thenumbers 7, 6, and 97. Let b represent the number of books.

Answer 1

Step-by-step explanation:

The correct option is the following:

The first option where you must add both the total value of the purchase of the books plus the additional cost for a total of 97, then the equation should be like this:

`\begin{gathered} correct\text{ equation} \\ 7b\text{ }+6=97 \\ 7b=97-6 \\ 7b=91 \\ b=(91)/(7)=13 \\ \textcolor{#FF7968}{b=13;}\text{\textcolor{#FF7968}{ this means }}\textcolor{#FF7968}{that}\text{\textcolor{#FF7968}{ 13 books }}\textcolor{#FF7968}{were}\text{\textcolor{#FF7968}{ bought}} \\ \text{Now }to\text{ }know\text{ if }the\text{ equations is correct }we\text{ replace }the\text{ 13 in the} \\ \text{equation;} \\ 7(\textcolor{#FF7968}{13})+6=\textcolor{#FF7968}{97} \\ \text{ multiplying }7\text{ by 13 }give\text{ us 91; }then\text{ we add 91 to 6 give us 97;} \\ which\text{ means }that\text{ the equation }is\text{ correct} \end{gathered}`