import math
a = [7.0,1.0,9.0]
b = [0.0,1.0,0.0]
c = [1.0,9.0,6.0]
svk = [0.0,9.0,8.0]


x1=x2=x3=k=x11=x22=x33= 0
x01=x02=x03 =1
m = 0


while (x01>0.01) or (x02>0.01) or (x03>0.01):
    if (m == 0):
        x1 = 0
        x2 = 0
        x3 = 0
        m+=1
    else:
        x1 = 1/a[0]*(svk[0]-a[1]*x2-a[2]*x3)
        x01 = math.fabs(x11-x1)
        x11 = x1
        x2 = 1/b[1]*(svk[1]-b[0]*x1-b[2]*x3)
        x02 = math.fabs(x22-x2)
        x22 = x2
        x3 = 1/c[2]*(svk[2]-c[0]*x1-c[1]*x2)
        x03 = math.fabs(x33-x3)
        x33 = x3
        k+=1



x1 = round(x1,4)
x2 = round(x2,4)
x3 = round(x3,4)



print('X1= ',x1)
print('X2= ',x2)
print('X3= ',x3)
print('Количеcтво итераций', k)