# math

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In a triangle ABC,angle B is 3 times angle A and angle C is 5 degrees less than 6 times angle A. Find the size of the angles.

• math -

A + B + C = 180
A + 3A + (6A-5) = 180
10A = 185
A = 18.5
B = 3A = 55.5
C = 106

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