algorithme python 10 de mathematique

def abonnement1(x,k):
    A=4.99+0.18*x
    B=6.99+0.083*x
    x=0
    k=1

    while B>A:
        x=x+k
        A=4.00+0.18*x
        B=6.88+0.083*x
        
    if A==B:
        print('les abonnements')
        print('ont le meme cout')
        print('pour',x, 'minutes')
        print('supplementaire de communication')
    else: 
        return(x-k)