4x + 3x + 48 + x + 4x = 360
12x + 48 = 360
12x = 312
x = 312/12 = 26
Angle ABC = 4*x = 4*26 = 104Angle ACD , 78-48= 30
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4x + 3x + 48 + x + 4x = 360
12x + 48 = 360
12x = 312
x = 312/12 = 26
Angle ABC = 4*x = 4*26 = 104
Angle ACD , 78-48= 30