Respuesta :
Keep adding 20 to 68. The equation is 68+20n=348. n = 14. He has to walk 14 miles
he has to was 14 miles
because 20x+68=348 and when you substitute x for 14 the equations equals 348
:)
because 20x+68=348 and when you substitute x for 14 the equations equals 348
:)