Answer:
x = 48 , y = 70
Explanation:
The triangle has 2 congruent (equal) sides, as denoted by the dashes through the sides.
The triangle is therefore isosceles with base angles congruent , that is
x + 7 = 55 ( subtract 7 from both sides )
x = 48
the sum of the 3 angles in the triangle is 180 , that is
y + 55 + 55 = 180 ( simplify left side )
y + 110 = 180 ( subtract 110 from both sides )
y = 70