| 20 | + | ( | x | × | 27 25 | + | 5 2 | ) | + | 0 | + | ( | 20 | × | 21 125 | ) | = | 1167 50 |
| Left side of the equation = | 20 | + | ( | x | × | 27 25 | + | 5 2 | ) | + | ( | 20 | × | 21 125 | ) |
| 20 | + | ( | x | × | 27 25 | + | 5 2 | ) | + | ( | 20 | × | 21 125 | ) | = | 1167 50 |
| Left side of the equation = | 20 | + | x | × | 27 25 | + | 5 2 | + | ( | 20 | × | 21 125 | ) |
| = | 45 2 | + | 27 25 | x | + | ( | 20 | × | 21 125 | ) |
| = | 45 2 | + | 27 25 | x | + | 20 | × | 21 125 |
| = | 45 2 | + | 27 25 | x | + | 84 25 |
| = | 1293 50 | + | 27 25 | x |
1293 50 | + | 27 25 | x | = | 1167 50 |
27 25 | x | = | 1167 50 | − | 1293 50 |
27 25 | x | = | - | 63 25 |
| x | = | - | 63 25 | ÷ | 27 25 |
| = | - | 63 25 | × | 25 27 |
| = | - | 7 | × | 1 3 |
| x | = | - | 7 3 |
| x | = | - 2.333333 |