Question

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Answer 1

2x+7x=180

=>9x=180

=>x=20

Greatest angle =7x=7×20=140

Answer 2

here..we know tha sum of supplementary angle is 180
so
atq
let x be an angle
now
x/180-x=2/7
on solving we get..
x=40..
now measure of larger angle is180-40=140 degree
second part abhi ni aa rha or last
ka(-3,0)=on X' axis