clear
clc
tol = input('Masukan toleransi = ');
x2 = input('Tebakan x2 = ');
x1new = (7-x2)/2
x2new = (11-x1new)/3
while abs(x2-x2new)>tol
    x2 = x2new;
    x1new = (7-x2)/2
    x2new = (11-x1new)/3
end