find the values of angles x, y and z in each of the following figures.
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Answer:3x +30=180
x =(180-30)/3
x=50 degree
2y+30=180
y=(180-30)/2
y=75degree
3x + 15 + z =180
150 + 15 +z = 180
z=180-(150+15)
z= 180-165
z= 15 degree
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