81 20000 | X | + | 301831 20000 | = | 81 100 | ( | 19751 | − | X | ) |
| Right side of the equation = | 81 100 | × | 19751 | − | 81 100 | X |
| = | 1599831 100 | − | 81 100 | X |
81 20000 | X | + | 301831 20000 | = | 1599831 100 | − | 81 100 | X |
81 20000 | X | + | 81 100 | X | = | 1599831 100 | − | 301831 20000 |
16281 20000 | X | = | 1599831 100 | − | 301831 20000 |