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Aleksandr [31]
3 years ago
6

Please need help on this

Mathematics
1 answer:
Katena32 [7]3 years ago
5 0

x = 23


The smaller triangle is exactly one third of the larger triangle.

39/3 is 13

x - 10

so 13 + 10 = 23


Hope this helps!  Brainliest please!

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