| 200000 | = | 7 4 | ÷ | 4 | × | 143 100 | × | 300 | × | 630 | + | 360 | x | × | 630 | − | 1 5 | × | 150000 |
| Right side of the equation = | 945945 8 | + | 226800 | x | − | 30000 |
| = | 705945 8 | + | 226800 | x |
| 200000 | = | 705945 8 | + | 226800 | x |
| - | 226800 | x | = | 705945 8 | − | 200000 |
| - | 226800 | x | = | - | 894055 8 |
894055 8 | = | 226800 | x |
| 226800 | x | = | 894055 8 |
| x | = | 894055 8 | ÷ | 226800 |
| = | 894055 8 | × | 1 226800 |
| = | 178811 8 | × | 1 45360 |
| x | = | 178811 362880 |
| x | = | 0.492755 |