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DerKrebs [107]
3 years ago
14

Please help ASAP! 50 PTS

Mathematics
2 answers:
Arada [10]3 years ago
7 0

x + 2x+10 = 70\\3x+10 = 70\\3x+10-10 = 70-10\\3x = 60\\3x/3 = 60/3\\x = 20

Final answer: x=20

Greeley [361]3 years ago
5 0

Answer:

x = 20

Step-by-step explanation:

The sum of the opposite interior angles of a triangle is equal to the exterior angle

x + 2x+10 = 70

Combine like terms

3x+10 = 70

Subtract 10 from each side

3x+10-10 = 70-10

3x = 60

Divide each side by 3

3x/3 = 60/3

x = 20

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