How do you find the degree of 4y-5xz?

Explanation:
The degree of an expression the the largest degree of any of its terms.
The degree of a term is the sum of the exponents of the variables in that term.
${\displaystyle 4y=4y^1}$ has a degree of 1
${\displaystyle 5xz=5x^1{z}^1}$ has a degree of (1+1)=2
(5xz) has a higher degree than (4y)
Therefore the degree of the expression is the degree of (5xz), namely 2
Result:
4y-5xz has degree 2