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frutty [35]
3 years ago
15

I need help I need help fast​

Mathematics
1 answer:
german3 years ago
6 0

Answer:

<STP=105°

Step-by-step explanation:

two interior angles equal one opposite exterior angle therefore

7x+6+7x+1=15x

group like terms

6+1=15x-7-7

7=15x-14x

7=x

for 15x

15 will multiply 7 and that is 105

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