9 10 | × | 657 25 | × | 270 | × | 84 | + | 9 10 | × | 418 25 | × | 150 | ( | x | − | 84 | ) | + | 9 10 | × | 134 5 | ( | 270 | − | 150 | ) | ( | x | − | 84 | ) | = | 9 10 | × | 509 | × | 4587 10 | + | 339 | × | 4969 10 | − | 308 | × | 4431 10 | − | 9 10 | × | 402 | × | 2199 5 |
| 方程左边 = | 13410684 25 | + | 11286 5 | ( | x | − | 84 | ) | + | 603 25 | ( | 270 | − | 150 | ) | ( | x | − | 84 | ) |
13410684 25 | + | 11286 5 | ( | x | − | 84 | ) | + | 603 25 | ( | 270 | − | 150 | ) | ( | x | − | 84 | ) | = | 9 10 | × | 509 | × | 4587 10 | + | 339 | × | 4969 10 | − | 308 | × | 4431 10 | − | 9 10 | × | 402 | × | 2199 5 |
| 方程左边 = | 13410684 25 | + | 11286 5 | x | − | 11286 5 | × | 84 | + | 603 25 | ( | 270 | − | 150 | ) | ( | x | − | 84 | ) |
| = | 13410684 25 | + | 11286 5 | x | − | 948024 5 | + | 603 25 | ( | 270 | − | 150 | ) | ( | x | − | 84 | ) |
| = | 8670564 25 | + | 11286 5 | x | + | 603 25 | ( | 270 | − | 150 | ) | ( | x | − | 84 | ) |
| = | 8670564 25 | + | 11286 5 | x | + | 603 25 | × | 270 | ( | x | − | 84 | ) | − | 603 25 | × | 150 | ( | x | − | 84 | ) |
| = | 8670564 25 | + | 11286 5 | x | + | 32562 5 | ( | x | − | 84 | ) | − | 3618 | ( | x | − | 84 | ) |
| = | 8670564 25 | + | 11286 5 | x | + | 32562 5 | x | − | 32562 5 | × | 84 | − | 3618 | ( | x | − | 84 | ) |
| = | 8670564 25 | + | 11286 5 | x | + | 32562 5 | x | − | 2735208 5 | − | 3618 | ( | x | − | 84 | ) |
| = | - | 5005476 25 | + | 43848 5 | x | − | 3618 | ( | x | − | 84 | ) |
| = | - | 5005476 25 | + | 43848 5 | x | − | 3618 | x | + | 3618 | × | 84 |
| = | - | 5005476 25 | + | 43848 5 | x | − | 3618 | x | + | 303912 |
| = | 2592324 25 | + | 25758 5 | x |
2592324 25 | + | 25758 5 | x | = | 9 10 | × | 509 | × | 4587 10 | + | 339 | × | 4969 10 | − | 308 | × | 4431 10 | − | 9 10 | × | 402 | × | 2199 5 |
| 方程右边 = | 21013047 100 | + | 1684491 10 | − | 682374 5 | − | 3977991 25 |
| = | 8298513 100 |
2592324 25 | + | 25758 5 | x | = | 8298513 100 |
25758 5 | x | = | 8298513 100 | − | 2592324 25 |
25758 5 | x | = | - | 2070783 100 |
| x | = | - | 2070783 100 | ÷ | 25758 5 |
| = | - | 2070783 100 | × | 5 25758 |
| = | - | 230087 20 | × | 1 2862 |
| x | = | - | 230087 57240 |
| x | = | - 4.019689 |