<span>5x + 20 = -5x
5x + 5x = -20
10x = -20
x = -20/10
x = -2</span>
C) x = -19/10 because when solving it with substitution u get x=-19/10 & y=153/10
Answer:

Step-by-step explanation:
Hello
let's assume that we are looking for x >=0

Let's assume that we are looking for x>=0
so the correct answer is 5