| 3 | ÷ | 4 | × | x | − | 1 10 | = | 1 | ÷ | 2 | × | x | + | 7 20 |
| Left side of the equation = | 3 4 | x | − | 1 10 |
3 4 | x | − | 1 10 | = | 1 | ÷ | 2 | × | x | + | 7 20 |
| Right side of the equation = | 1 2 | x | + | 7 20 |
3 4 | x | − | 1 10 | = | 1 2 | x | + | 7 20 |
3 4 | x | − | 1 2 | x | = | 7 20 | + | 1 10 |
1 4 | x | = | 7 20 | + | 1 10 |
1 4 | x | = | 9 20 |
| x | = | 9 20 | ÷ | 1 4 |
| = | 9 20 | × | 4 |
| = | 9 5 | × | 1 |
| x | = | 9 5 |
| x | = | 1.8 |