Question

I am very confused on this topic, it would mean the world to me if you can explain it thoroughly with understandable words for a kidPlease do number 5 and if you can number 6 so I can comprehend more. Thanks

Answer 1

The first step in solving the exercise is to replace the given value of b into the equation:

`\begin{gathered} 65/ b+8\cdot4=20 \\ (65)/(b)+8\cdot4=20 \\ (65)/(5)+8\cdot4=20 \end{gathered}`

Now, we follow the PEMDAS order, that is, first multiplications and divisions and then the addition:

`\begin{gathered} (65)/(5)+8\cdot4=20 \\ 13+32=20 \\ \boldsymbol{45\\eq20}\text{ }\Rightarrow\text{`

Finally, since 45 is different from 20, then the given value of the variable is not a solution to the equation.