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Anna71 [15]
3 years ago
13

Find the value of x.

Mathematics
1 answer:
polet [3.4K]3 years ago
7 0

Answer:

x = 20

Step-by-step explanation:

7x° + (x + 20)° = 180° (linear pair)

Solve for x

7x + x + 20 = 180

Add like terms

8x + 20 = 180

8x + 20 - 20 = 180 - 20

8x = 160

8x/8 = 160/8

x = 20

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