Please help! i will give brainliest and extra points if you answer correctly, thank you. (3)

Answer:
Answer:
11. -8x+9/-9+x
-8(10)+9/-9+10
-71/1
=-71
12. 2x+4/1+x
2(0)+4/1+0
4/1
=4
13. -4+9x/7x
-4+9(2)/7(2)
14/14
=1
14. -1-9x/x
-1-9(-1)/-1
8/-1
=-8
15. -12-7x/x
-12-7(-1)/-1
-5/-1
=5