( | A | − | 1143700591 20 | ) | × | 1 2 | ÷ | 100 | + | 1470976932 25 | = | A |
方程左边 = | ( | A | − | 1143700591 20 | ) | × | 1 200 | + | 1470976932 25 |
( | A | − | 1143700591 20 | ) | × | 1 200 | + | 1470976932 25 | = | A |
方程左边 = | A | × | 1 200 | − | 1143700591 20 | × | 1 200 | + | 1470976932 25 |
= | A | × | 1 200 | − | 1143700591 4000 | + | 1470976932 25 |