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Answer:The sum of the interior angles of any triangle = 180°Step-by-step explanation:(15x + 1) + (6x + 5) + (4x – 1) = 180°25x + 5 = 18025x = 175 x = 7Evaluate x into each: m<A = 106° , m<B = 47° , m<C= 27°106 + 47 + 27 = 180

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