8. If x and y are the angles forming a linear
pair such that x-y=60° and x + y = 80º,
then find y.
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Answer:
x-y=60. (Eq1)
x+y=80. (eq2)
adding eq 1 and 2
2x=140
x=70
putting x=70in eq in 2
we get
x+y=80
70+y=80
y=10. ans
hence x=70 and y=10
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