Answer:
12
Step-by-step explanation:
let the unknown number is x.
As said in the question, we add half of x to 5 and their sum equals to 11.
steps:
- write the equation.
- do the L.C.M.
- transfer 2 to the other side of the equal sign
- keep x as the subject and do the subtraction on the other side of the equal sign
[tex]5 + \frac{1}{2}x = 11\\\frac{10+x}{2} = 11\\10 + x = 22\\x = 22-10\\x = 12[/tex]
