SOLUTION: wat is m of angle R if S=(12x-15)deg and T=(3x+30) deg in a triangle RST? How?

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Question 193899: wat is m of angle R if S=(12x-15)deg and T=(3x+30) deg in a triangle RST? How?
Answer by vleith(2983) About Me  (Show Source):
You can put this solution on YOUR website!
Sum of the angles in a triangle is 180 degrees
180+=+R+%2B+S+%2B+T
180+-+S+-+T+=+R+
180+-+%2812x-15%29+-+%283x%2B30%29+=+R
180+-+12x+%2B+15+-+3x+-+30+=+R
165+-+15x+=+R