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8090 [49]
3 years ago
15

Solve for x in the diagram below

Mathematics
1 answer:
ella [17]3 years ago
8 0

Answer:

20

Step-by-step explanation:

3x + x + 100 = 180 (sum of angles on a straight line)

4x = 180-100

4x=80

divide both sides by 4

x=20

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