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Helpppppppppppppppppppp solve for x
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Helpppppppppppppppppppp solve for x

Helpppppppppppppppppppp solve for x-example-1
User FluepkeSchaeng
by
7.4k points

1 Answer

4 votes

Answer:

x=35

Explanation:

Since a quadrilateral's interior angles add up to 360°, we get this:

360-85-20=360-4x+x

340-85=360-3x

255=360-3x

-105= -3x

Multiply both sides by -1

105=3x

3x=105

Divide both sides by 3

x=35

User Richhallstoke
by
8.3k points
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