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Tresset [83]
3 years ago
15

What’s the value of X?

Mathematics
2 answers:
ArbitrLikvidat [17]3 years ago
7 0

Answer:

x = 10

Step-by-step explanation:

7x + 12 + 9x + 8 = 180

16x + 20 = 180

16x = 160

x = 10

Andrej [43]3 years ago
3 0

Answer:

x = 10

Step-by-step explanation:

Adjacent angles add to 180 degrees, so set the angles equal to 180

(7x + 12) + (9x + 8) = 180

- 12 - 12

7x + (9x + 8) = 168

- 8 - 8

7x + 9x = 160

16x = 160

/16 /16

x = 10

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