The given expression [-20 - (-4)] is equivalent to (-20 + 4).
A linear expression is an expression in which the highest power of the variable is always 1. If there is no variable, we can assume the power of the variable as 0.
Therefore, the variable x⁰ = 1.
Given linear expression:
-20 - (- 4)
= (-20 + 4)
Learn more about linear expression here:https://brainly.com/question/24129451
#SPJ2
