Question

Please helpppp and explain

Answer 1

angle BAC=50-2x

Explanation:

angle ACD=115+x

then, angle ACB=180-(115+x) because it is a supplementary angle

angle ABC=angle ACB because it is an isosceles triangle

angle BAC=180-2[180-(115+x)]

angle BAC=180-360+230-2x

angle BAC=50-2x