Simplify. 1/4y + 1 1/2 + 2 − 1 3/4y − 12 explain

the answrr is -1 1/2y-8 1/2

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In the first triangle 80+20+p=180 (since sum of all angles of a triangle is 180)so p= 80also in second triangle 55+45+q=180 (since sum of all angles of a triangle is 180)so q=80so we can conclude that p=80 degrees q=80 degrees so p=q=80 degreeshence option b is correct