If (6x+20°),(9y+30°) and (3z+40°) form a complete angle, then the relationship between x,y,z is
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2x + 3y +z=30°..........
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6x+20+9y+30+3z+40=180
90+6x+9y+3z=180
6x+9y+3z=90
90+6x+9y+3z=180
6x+9y+3z=90
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