Respuesta :

Answer:

x = 22°

Step-by-step explanation:

∠RFT = ∠MFE because they are vertical angles

∠RFT = (x + 6)°

(3x - 4)° + (x + 6)° = 90°

combine like terms:

4x + 2° = 90°

4x = 88°

x = 22°