| ( | 148 | + | 368 | ) | ÷ | 31 | × | x | + | 141 | ÷ | 31 | × | ( | x | + | 15 | ) | + | 124 | ÷ | 31 | × | ( | x | + | 30 | ) | = | 1065 |
| 方程左边 = | ( | 148 | + | 368 | ) | × | 1 31 | x | + | 141 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| ( | 148 | + | 368 | ) | × | 1 31 | x | + | 141 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) | = | 1065 |
| 方程左边 = | 148 | × | 1 31 | x | + | 368 | × | 1 31 | x | + | 141 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| = | 148 31 | x | + | 368 31 | x | + | 141 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| = | 516 31 | x | + | 141 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
| = | 516 31 | x | + | 141 31 | x | + | 141 31 | × | 15 | + | 4 | ( | x | + | 30 | ) |
| = | 516 31 | x | + | 141 31 | x | + | 2115 31 | + | 4 | ( | x | + | 30 | ) |
| = | 657 31 | x | + | 2115 31 | + | 4 | ( | x | + | 30 | ) |
| = | 657 31 | x | + | 2115 31 | + | 4 | x | + | 4 | × | 30 |
| = | 657 31 | x | + | 2115 31 | + | 4 | x | + | 120 |
| = | 781 31 | x | + | 5835 31 |
781 31 | x | + | 5835 31 | = | 1065 |
781 31 | x | = | 1065 | − | 5835 31 |
781 31 | x | = | 27180 31 |
| x | = | 27180 31 | ÷ | 781 31 |
| = | 27180 31 | × | 31 781 |
| = | 27180 | × | 1 781 |
| x | = | 27180 781 |
| x | = | 34.801536 |