105876 - x + 21357 = 46521
105876 - x = 46521 - 21357
105876 - x = 25164
x = 105876 - 25164
x = 80712.
105876 - x + 21357 = 46521 => 105876 - x = 46521 - 21357 = 25164 => x = 105876 - 25164 = 80712
105876-X+21357=46521
=105876-X=46521-21357
=105876-X=25164
X=105876-25164
X=80712