alessandralopez006 alessandralopez006

13-09-2021
Mathematics

contestada

< (d+7)° + <(3d+5)° =180° find d

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jimrgrant1 jimrgrant1

13-09-2021

Answer:

d = 42

Step-by-step 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

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