Answer:
x=13 (The number is 11)
Step-by-step explanation:
5/(x-1)=10/x+11
Use cross multiplication:
5(x+11)=10(x-1)
5x+55=10x-10
(Rewrite):10x-10=5x+55
Substract 5x from each side then simplify.
10x-5x-10=5x-5x+55
5x-10=0+55
5x-10=55
Add ten on both sides. Then simplify.
5x-10+10=10+55
5x=65
x=13
