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< (d+7)° + <(3d+5)° =180° find d

< (d+7)° + <(3d+5)° =180° find d
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4 votes
< (d+7)° + <(3d+5)° =180° find d

User Karuhanga
by
8.4k points

1 Answer

4 votes

Answer:

d = 42

Explanation:

d + 7 + 3d + 5 = 180 , that is

4d + 12 = 180 ( subtract 12 from both sides )

4d = 168 ( divide both sides by 4 )

d = 42

User Nonbeing
by
9.0k points
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