Question

please help me with this question ​

Answer 1

Answer:

The question is wrong a angle cannot be negative hence there is an error in the question.

the question should be x - 2y = 30

answer for that is:

x - 2y = 30 - (1)

x + y = 180 - (2)

On subtracting 1 with 2

-3y = - 210

3y = 210

y = 70