| 19855 | ( | 243 10000 | + | 1191 50 | x | ) | ( | 19757 20000 | − | 1191 100 | x | ) | = | 1165 |
| Left side of the equation = | 19855 | × | 243 10000 | ( | 19757 20000 | − | 1191 100 | x | ) | + | 19855 | × | 1191 50 | x | ( | 19757 20000 | − | 1191 100 | x | ) |
| = | 964953 2000 | ( | 19757 20000 | − | 1191 100 | x | ) | + | 4729461 10 | x | ( | 19757 20000 | − | 1191 100 | x | ) |
| = | 964953 2000 | × | 19757 20000 | − | 964953 2000 | × | 1191 100 | x | + | 4729461 10 | x | ( | 19757 20000 | − | 1191 100 | x | ) |