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soldi70 [24.7K]
3 years ago
15

Which is the value of x? a. x=3 b. x=6.5 c. x=8.5 d. x=14

Mathematics
1 answer:
Elodia [21]3 years ago
4 0

Answer:

x = 14

Step-by-step explanation:

The angles form a straight line which makes them add to 180 degrees

4x+ 8x+12 =180

Combine like terms

12x+12 =180

Subtract 12 from each side

12x+12-12 = 180-12

12x=168

Divide each side by 12

12x/12 =168/12

x =14

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