Answer:
x = 48, y = 70
Explanation:
Since 2 sides are congruent, then the triangle is isosceles and the base angles are congruent, thus
x + 7 = 55 ( subtract 7 from both sides )
x = 48
The sum of the 3 angles in a triangle = 180°
Subtract the sum of the 2 angles from 180 for y, that is
y = 180 - (55 + 55) = 180 - 110 = 70