Answer:
(38 - 5x)⁰ + 83⁰ + 24⁰ = 180⁰
<=> (38 + 83 + 24) - 5x = 180
<=> 145 - 5x = 180
<=> 5x = 145 - 180
<=> 5x = - 35
<=> x = - 7
Explanation:
All 3 angles add up to be 180 due to sum of angles in a triangle.
Given this fact,
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