| ( | 1616246291 200 | + | 11 10 | X | ) | ÷ | ( | 155763079 20 | − | 11 10 | X | ) | = | X | ÷ | 190815111 100 |
| 方程两边同时乘以: | ( | 155763079 20 | − | 11 10 | X | ) |
| ( | 1616246291 200 | + | 11 10 | X | ) | = | X | ÷ | 190815111 100 | × | ( | 155763079 20 | − | 11 10 | X | ) |
1616246291 200 | + | 11 10 | X | = | X | ÷ | 190815111 100 | × | ( | 155763079 20 | − | 11 10 | X | ) |
1616246291 200 | + | 11 10 | X | = | X | ÷ | 190815111 100 | × | 155763079 20 | − | X | ÷ | 190815111 100 | × | 11 10 | X |