Question

What is Z?

2+ 1/5z=7

Answer 1

\[2+\frac{ 1 }{5z }=7\]
multiply both sides by 5z to cancel remove the fraction...
\[\left( 2+\frac{ 1 }{5z }=7 \right)\times5z\]
\[10z+1=35z\]
did you get it up to here?
then combine all the terms that are similar( or has z on one side of the equation)

Answer 2

7-2 = 5 so now you have to solve for 1/5 ..... 1/5 * z = 5 ... z = 5

2+1/5*5 = 7