1.
Find m2ABC.
А
(6x - 7)º
B
(4x + 23)

Answer:
6x-7=4x+23
6x-4x=23+7
2x=30
2x/2 = 30/2
X=15
hence, 4(15)+23
60+23=83
B+83=180
B=180-83
B=97