Step-by-step explanation:
5z, 5x and 5y are all unlike terms.
If there was something like <em><u>5z</u></em> + 5x <em><u>-</u></em><em><u> </u></em><em><u>3z</u></em> + 5y, then both 5z and -3z have something in common and so therefore are said to be like terms.
Hope my description helps.
Good night.
Wait so what is the point of this question?
<span>π radians =180∘</span>
1 radian = tex] \frac{180°}{ \pi} [/tex]π
3 radians = 
Answer: -28
Step-by-step explanation: