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storchak [24]
3 years ago
10

+

Mathematics
1 answer:
marta [7]3 years ago
3 0

Answer:

x=11

Step-by-step explanation:

supplementary angles add up to 180 degrees

10x + 70 =180

10x = 110

x=11

11x10 = 110  

 110+70 = 180

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