Step 1. Add 70 to both sides
\(-np\ \textless \ 40+70\)
Step 2. Simplify 40 + 70 to 110
\(-np\ \textless \ 110\)
Step 3. Divide both sides by \(p\)
\(-n\ \textless \ \frac{110}{p}\)
Step 4. Multiply both sides by \(-1\)
\(n\ \textgreater \ - \frac{110}{p}\)
Done! :)