Answer:
y = 10
Step-by-step explanation:
2y + 30 and 3y + 20 are known as vertical angles. They are equal to one another.
[tex]2y+30=3y+20\\\\2y+30-2y=3y+20-2y\\\\30=y+20\\\\30-20=y+20-20\\\\10=y[/tex]
