We are given the following inequality
[tex]1+x<5[/tex]Let us first solve the inequality for x.
Subtract 1 from both sides of the inequality
[tex]\begin{gathered} -1+1+x<5-1 \\ x<4 \end{gathered}[/tex]So the solution of the inequality is all the values of x less than 4
Now let us graph this solution on a number line.