Answer:
y = 55
Step-by-step explanation:
Triangle angles ALWAYS add up to 180; so,
x + 30 + 25 = 180 (Add like terms)
x + 55 = 180 (Subtract 55 from both sides)
x = 125
Since x and y form a linear pair, they should add up to 180; so,
125 + y = 180 (Subtract 125 from both sides)
y = 55
