Question

Five less than z is 4.

Answer 1

This text can be "translated" as

`5-z=4`

Then let's solve that equation to "z", to solve that equation let's subtract 5 on both sides

`\begin{gathered} -5+5-z=4-5 \\ \\ -z=4-5 \\ \\ -z=-1 \end{gathered}`

We have minus on both sides, then let's multiply both by (-1) and get the value of z

`\begin{gathered} -z=-1 \\ \\ z=1 \end{gathered}`

Therefore z is equal to 1