please solve it fast ....
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sivaprasath:
x = 100 degree , y = 60 degree
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x-40=y. and 3x=5y, so x=5y/3
=(5y/3)-40= y
(5y-120)=3y
2y=120
y=60
so x-40= 60°
y+40 =100°(A)
How x-40 = y
exterior alternate angle
l//m
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