Step 1
2n = 70
divide both sides by 2
[tex]\begin{gathered} \frac{2n}{2}=\frac{70}{2} \\ n\text{ = 35} \end{gathered}[/tex]
Step 2
Make a conclusion based on step 1
If n = 3.5
Then substituting for n = 3.5 in the equation
[tex]\begin{gathered} 2(3.5)\text{ =7} \\ 7\text{ is not equal to 70} \end{gathered}[/tex]
Therefore n = 3.5 is not a solution of the equation 2n = 70
