Question

solve using addiction and multiplication principle 7-10z>5

Answer 1

Google it.

Answer 2

\[7-10z>5\]add \(10z\) to both sides get
\[7>5+10z\] subtract 5 get
\[2>10z\] divide by 10 get
\[\frac{2}{10}>z\] or \[.2>z\]