Answer:3x+6=2x+21 base angle of isosceles triangle
3x-2x=21-6
X=15
<J=3×15+6=51
<k=2×15+21=51
,<I=180-51-51=78
Step-by-step explanation:
X can not = 0 because if I did your answer would not be a fraction it would be 0
+1/31 and -1/31
Hope this helps.
