Step-by-step explanation:
Since the triangle is an equilateral one every angle equals 60
Solve for x
[tex]x+20 =60[/tex]°
Subtract 20 from both sides
[tex]x=40[/tex]°
Solve for y
[tex]4y=60[/tex]°
divide both sides by 4
[tex]y=15[/tex]°
Brainliest please :)
