| ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | ÷ | X | − | ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | = | 7 | ÷ | 8 |
| 方程两边同时乘以: | X |
| ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | − | ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | X | = | 7 | ÷ | 8 | × | X |
| 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | − | ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | X | = | 7 | ÷ | 8 | × | X |
1 6 | X | + | 1 6 | X | + | 60 | − | ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | X | = | 7 8 | X |
1 3 | X | + | 60 | − | ( | 1 | ÷ | 6 | × | X | + | 1 | ÷ | 6 | × | X | + | 60 | ) | X | = | 7 8 | X |
1 3 | X | + | 60 | − | 1 | ÷ | 6 | × | X | X | − | 1 | ÷ | 6 | × | X | X | − | 60 | = | 7 8 | X |
1 3 | X | + | 60 | − | 1 6 | X | X | − | 1 6 | X | X | − | 60 | X | = | 7 8 | X |
| - | 179 3 | X | + | 60 | − | 1 6 | X | X | − | 1 6 | X | X | = | 7 8 | X |