2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | ) | × | 1 5 | + | 131 2500 | = | X |
| 方程左边 = | 2921 2 | + | 8763 200 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | ) | × | 1 5 | + | 131 2500 | X |
| = | 300863 200 | + | 103 1250 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | ) | × | 1 5 |
300863 200 | + | 103 1250 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | ) | × | 1 5 | = | X |
| 方程左边 = | 300863 200 | + | 103 1250 | X | + | 2921 2 | × | 19 400 | + | 2921 2 | × | 3 100 | × | 19 400 | + | 3 100 | X | × | 19 400 | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | ) |
| = | 300863 200 | + | 103 1250 | X | + | 55499 800 | + | 166497 80000 | + | 57 40000 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | + | ( | 2921 2 | + | 2921 2 | × | 3 100 | + | 3 100 | X | ) | × | 19 400 | × | 2 | ÷ | 2 | ) | × | 1 5 |