| 300 | + | 387 | ÷ | ( | 1 | + | I | ) | + | 193 | ÷ | ( | 1 | + | I | ) | × | 2 | + | 100 | ÷ | ( | 1 | + | I | ) | × | 3 | + | 150 | ÷ | ( | 1 | + | I | ) | × | 7 | = | 600 | ÷ | ( | 1 | + | I | ) | × | 4 | + | 600 | ÷ | ( | 1 | + | I | ) | × | 5 | + | 850 | ÷ | ( | 1 | + | I | ) | × | 6 |
| Multiply both sides of the equation by: | ( | 1 | + | I | ) |
| 300 | ( | 1 | + | I | ) | + | 387 | + | 193 | × | 2 | + | 100 | × | 3 | + | 150 | × | 7 | = | 600 | × | 4 | + | 600 | × | 5 | + | 850 | × | 6 |
| 300 | × | 1 | + | 300 | I | + | 387 | + | 193 | × | 2 | + | 100 | × | 3 | + | 150 | × | 7 | = | 600 | × | 4 | + | 600 | × | 5 | + | 850 | × | 6 |
| 300 | + | 300 | I | + | 387 | + | 386 | + | 300 | + | 1050 | = | 2400 | + | 3000 | + | 5100 |
| 2423 | + | 300 | I | = | 10500 |
| 300 | I | = | 10500 | − | 2423 |
| 300 | I | = | 8077 |
| I | = | 8077 | ÷ | 300 |
| = | 8077 | × | 1 300 |
| I | = | 8077 300 |
| I | = | 26.923333 |