Question

Given 16 = −5 + z4solve for z

Answer 1

16=-5+z4
=>. 16+5=z4
=>. 21=z4
=>. 21/4=z
=>. z=5.25

Answer 2

16= -5 + 4z

16+5 = 4z

21 = 4z

4z = 21

$z = \frac{21}{4}$