Question

if angle A and B from a linear pair of angles and a - 2 b = 30 then find the value of a

Answer 1

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Answer 2

if A and B are linear pair then their sum is 180°
by using this equation
a + b = 180 --(i)
and : a - 2b = 30 --(ii)
on subtracting two from one
we get 3b = 150
b = 50° & a = 130°
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