Let's solve the equation step by step:

Add 3 1/2 to both sides of the equation:

(х+2,4) = 1 9/50 + 3 1/2
(х+2,4) = 1 9/50 + 3 25/50
(х+2,4) = 4 34/50
(х+2,4) = 4 17/25

Convert 4 17/25 to an improper fraction:

4 17/25 = (4*25 + 17)/25
4 17/25 = (100 + 17)/25
4 17/25 = 117/25

Set the equation:

х + 2,4 = 117/25

Subtract 2,4 from both sides:

х = 117/25 - 24/10
х = (11710 - 2425)/250
х = (1170 - 600)/250
х = 570/250
х = 57/25

Therefore, the solution to the equation (х+2,4)-3 1/2 = 1 9/50 is х = 57/25.