Sorry but that's an unclear question, can you double check to see if you included everything, and also check to see the possible answers?
The two lines with arrows are parallel, which means angles A and B are supplementary.
So we have
A + B = 180º
(6<em>x</em> - 35)º + (3<em>x</em> + 53)º = 180º
(9<em>x</em> + 18)º = 180º
(9<em>x</em>)º = 162º
<em>x</em> = 18
This means angle A has measure
A = (6<em>x</em> - 35)º = 73º
(57-32)➗5.5 =x
The problem is just flipped.
r=9b_9a =r+9a/9=9b/9=b=r+9a/9