90/z-1=15

Answer 1

To solve the equation \(\frac{90}{z} - 1 = 15\), follow these steps:

1. Add 1 to both sides of the equation:

\[ \frac{90}{z} = 15 + 1 \]

\[ \frac{90}{z} = 16 \]

2. Next, multiply both sides by \(z\) to eliminate the fraction:

\[ 90 = 16z \]

3. Now, divide both sides by 16 to solve for \(z\):

\[ z = \frac{90}{16} \]

4. Simplifying the fraction:

\[ z = \frac{45}{8} \]

So, the solution is:

\[ z = 5.625 \]