Question

Angle PVR and QR is a linear pair if if angle p o r and QR is a linear pair if Angle B Y is equal to 3 x square and angle Q what is equal to 2 X + 10 square then find the value of x

Answer 1

a - b = 80

a + b = 180

a = 80 + b

putting 80 + b in place of a

80 + b + b = 180

80 + 2b =180

2b = 180 - 80

2b = 100

 b = 50