Question

Find the value of shown in the figure below

Answer 1

Since, the exterior angle is equal to the sum of opposite angles.

(y+3)° +(4y-8)° = 110°

y + 3 +4y -8 = 110

5y -5 = 110

5y = 115

y = 23°

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Answer 2

Answer:

$(y + 3) + (4y - 8) + (180 - 110) = 180$

$y + 3 + 4y - 8 + 70 = 180$

$5y + 65 = 180$

$5y = 180 - 65$

$5y = 115$

$y = 115 \div 5$

$y = 23$

the three angles are 26° ,84° ,70°

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