Answer:
ok
Step-by-step explanation:
9+10=21
Add to both sides:
Subtract 2 from both sides:
Divide both side by 2:
-2(3x-4)=4(5x-11)
-6x+8=20x-44
8+44=26x
26x=52
x=52/26
your answer will be x=2
16:20??
Lol I think it's wrong sorry.