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asambeis [7]
3 years ago
5

Angles a= 3x + 5 b= 5x - 18. C= 7x - 2

Mathematics
1 answer:
suter [353]3 years ago
5 0

Answer:

x = 13.

So the 3 angles are a =  44, b = 47 and c = 89 degrees.

Step-by-step explanation:

If these are the angles  are the 3 angles of a triangle they sum to 180 degrees, so:

3x + 5 + 5x - 18 + 7x - 2 = 180

15x - 15 = 180

15x = 195

x = 195/15

x = 13.

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