| 300000 | = | ( | x | − | 26 | ) | × | 8 | × | 7 | × | 80 | + | ( | 3 2 | x | − | 35 | ) | × | 8 | × | 7 | × | 40 | + | ( | x | − | 26 | ) | × | 12 | × | 7 | × | 70 100 |
| Right side of the equation = | ( | x | − | 26 | ) | × | 4480 | + | ( | 3 2 | x | − | 35 | ) | × | 2240 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| 300000 | = | ( | x | − | 26 | ) | × | 4480 | + | ( | 3 2 | x | − | 35 | ) | × | 2240 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| Right side of the equation = | x | × | 4480 | − | 26 | × | 4480 | + | ( | 3 2 | x | − | 35 | ) | × | 2240 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 |
| = | x | × | 4480 | − | 116480 | + | ( | 3 2 | x | − | 35 | ) | × | 2240 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) |
| = | 4480 | x | − | 829480 | + | ( | 3 2 | x | − | 35 | ) | × | 2240 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) |
| = | 4480 | x | − | 829480 | + | 3 2 | x | × | 2240 | − | 35 | × | 2240 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 |
| = | 4480 | x | − | 829480 | + | 3360 | x | − | 78400 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 |
| = | 7840 | x | − | 907880 | + | ( | x | − | 26 | ) | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 7840 | x | − | 907880 | + | x | × | 4704 | − | 26 | × | 4704 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) |
| = | 7840 | x | − | 907880 | + | x | × | 4704 | − | 122304 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 12544 | x | − | 1030184 | + | ( | 3 2 | x | − | 35 | ) | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 12544 | x | − | 1030184 | + | 3 2 | x | × | 252 5 | − | 35 | × | 252 5 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 12544 | x | − | 1030184 | + | 378 5 | x | − | 1764 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 63098 5 | x | − | 1031948 | + | ( | 3 2 | x | − | 35 | ) | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 63098 5 | x | − | 1031948 | + | 3 2 | x | × | 1344 | − | 35 | × | 1344 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 63098 5 | x | − | 1031948 | + | 2016 | x | − | 47040 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 73178 5 | x | − | 1078988 | + | ( | x | − | 26 | ) | × | 1512 |
| = | 73178 5 | x | − | 1078988 | + | x | × | 1512 | − | 26 | × | 1512 |
| = | 73178 5 | x | − | 1078988 | + | x | × | 1512 | − | 39312 |
| = | 80738 5 | x | − | 1118300 |
| 300000 | = | 80738 5 | x | − | 1118300 |
| - | 80738 5 | x | = | - | 1118300 | − | 300000 |
| - | 80738 5 | x | = | - | 1418300 |
| 1418300 | = | 80738 5 | x |
80738 5 | x | = | 1418300 |
| x | = | 1418300 | ÷ | 80738 5 |
| = | 1418300 | × | 5 80738 |
| = | 709150 | × | 5 40369 |
| x | = | 3545750 40369 |
| x | = | 87.833486 |