Question 1125493
In triangle ABC, B is 15 less than two times A. If C is 3 degrees larger than B, find the three angles.  
a+b+c=180
b=a.a-15
c=b+3
b= (a2-15)+3
b= (
<pre>Let angle A be A
Then angle B = 2A - 15
And, angle C = 2A - 15 + 3, or 2A - 12
As the 3 angles sum to 180<sup>o</sup>, we get: A + 2A - 15 + 2A - 12 = 180
5A = 207
<b>Solve that for A, angle A's measurement.
Subtract 15 from TWICE A to get B's measurement.
Subtract 12 from TWICE A to get C's measurement.</b>
That's it!! It's as SIMPLE as that!!