| 15 | + | ( | x | × | 27 25 | + | 5 2 | ) | + | 3 20 | x | + | ( | 15 | × | 331 2000 | ) | = | 8871 50 |
| Left side of the equation = | 15 | + | x | × | 27 25 | + | 5 2 | + | 3 20 | x | + | ( | 15 | × | 331 2000 | ) |
| = | 35 2 | + | 123 100 | x | + | ( | 15 | × | 331 2000 | ) |
| = | 35 2 | + | 123 100 | x | + | 15 | × | 331 2000 |
| = | 35 2 | + | 123 100 | x | + | 993 400 |
| = | 7993 400 | + | 123 100 | x |
7993 400 | + | 123 100 | x | = | 8871 50 |
123 100 | x | = | 8871 50 | − | 7993 400 |
123 100 | x | = | 2519 16 |
| x | = | 2519 16 | ÷ | 123 100 |
| = | 2519 16 | × | 100 123 |
| = | 2519 4 | × | 25 123 |
| x | = | 62975 492 |
| x | = | 127.997967 |