Answer:
Explanation:
the sum of the interior angles of a triangle is 180°
find x
68 +x + 53 + x + 79 = 180
2x = 180 - 53 - 79 - 68
2x = - 20
x = -20 : 2
x = -10
find <A
x + 53 =
10 + 53 = 63°
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