Answer:
x = 82.5
Explanation:
The sum of the 3 angles in a triangle = 180°
Sum the 3 angles and equate to 180, that is
x + x - 45 + 60 = 180, that is
2x + 15 = 180 ( subtract 15 from both sides )
2x = 165 ( divide both sides by 2 )
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60+x-45+x=180
60-45+2x=180
15+2x=180
2x=180-15
2x=165
x=165/2
x=82.5
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