Need some help on my homework asap

Answer:
see below
Step-by-step explanation:
4y - 9 - 13y
Combine like terms
4y-13y-9
-9y -9
2 + 4u - 7 +3u + 10 -12u
Combine like terms
4u+3u-12u+2-7+10
-5u+5
16j +8-9j -4-7j
Combine like terms
16j-9j-7j+8-4
0j +4
4