Question

I am in 9th grade learning Algebra 1 and I need help to understand it. Can you please help me?

Answer 1

1) Considering that we have the statement "A number and -5 has a result of 2".

2) We can rewrite it as a Linear Equation, calling this number by x we can write it out:

`x-5=2`

Then we have a One step equation. The first thing to do is to isolate the x variable on the left side. So let's manipulate this equation by adding 5 to both sides:

`\begin{gathered} x-5=2 \\ x-5{\textcolor{blue}{+5}}=2{\textcolor{blue}{+5}} \\ x+0=7 \\ x=7 \end{gathered}`

By adding 5 to the left side we get rid of that -5 on the left side, and since it is an equality, we have to add 5 to the right side as well

3) Hence, to solve Step equations we need to manipulate the equation to isolate the variable on one side.