If l is parallel to m, find the values of x and y in the diagram below

Answer:
(7x - 31) +63 + (5x - 8) = 180 (sum of co-interior angle adds up to 180)
7x +5x +63 - 31 - 8 = 180
12x = 180 + 31 +8 - 63
12x = 158
X= 156/12
X= 13
(4y+27) +(5x-8) = 180
4y +27 - 8 +5(13) = 180
4y= 180+8-27-5(13)
4y =96
Y= 96/4
Y = 24