Respuesta :

Answer:

U= 28

Step by step solution

add 23 to both sides

U-23+23=5+23

hence

U=28

Answer:

Full question?? Solve for 47 – u, when u = 23

If that is the question you are asking the answer is 24

Step-by-step explanation:

Any letter may be used as a variable (or unknown number). In this case, it's lowercase "u." So simply plug the number in for the variable and you get 47 – 23 = 24.