Respuesta :

Answer:

1) equation relating both

N+F = 19

2)N = 9

Step-by-step explanation:

N+F =15

He folded 6, so F = 6

N = 15 - 6 = 9

Answer:

equation    n= 15-f

Step-by-step explanation:

f= already folded

for second question:   n=15-6