Question

If x and 3x are linear pair then find the value of x.
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Answer 1

Explanation:

x+3x=180 (sum of linear pair=180)

or, 4x =180

or, x = 180/4

therefore x =45

Answer 2

x = 45°

Explanation:

x + 3x = 180°

--> 4x = 180°

--> x = 180 / 4 = 45°