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IRISSAK [1]
2 years ago
10

I really don’t understand

Mathematics
1 answer:
Korolek [52]2 years ago
8 0

Answer:

x=5

Step-by-step explanation:

The exterior angle of a triangle theorem states the angles V and U (in the diagram) will equal angle UTK.

40°+12x=21x-5

Now we just solve like a regular equation

40+5=21x-12x

45°=9x

45°÷9=9x÷9

5=×

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Step-by-step explanation:


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