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Find the value of a . A.18 B.21 C.20 D.17
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Find the value of a . A.18 B.21 C.20 D.17

Find the value of a . A.18 B.21 C.20 D.17-example-1
User Mo D Genesis
by
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1 Answer

7 votes

Answer:

a =18

Explanation:

The two angles are vertical angles and vertical angles are equal

6a +11 = 2a+83

Subtract 2a from each side

6a-2a +11 = 2a-2a+83

4a +11 =83

Subtract 11 from each side

4a +11 -11 = 83-11

4a = 72

divide each side by 4

4a/4 = 72/4

a =18

User PiRX
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