Answer:
C
Step-by-step explanation:
I believe the answer would be C (sorry i messed uo the first time)
5 - x=90°
6- angle c= 75°
7- angle a = 90°
either b or c not sure
答案是 NO.c
Step-by step:
第一的，
-3=2x+3
-6=2x
因此，x= -3
第二，
2x+3=5
2x=5-3
2x=2
因此, x=1
