a.
3x - 45 = x + 23
2x = 68
x = 34
b. BCF = 180 - 34 - 23 = 180 - 57 = 123°
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a.
3x - 45 = x + 23
2x = 68
x = 34
b. BCF = 180 - 34 - 23 = 180 - 57 = 123°