21 125 | x | = | 3 25 | x | + | 1 20 | ( | 0 | + | x | ) | x | ÷ | 2 |
| Right side of the equation = | 3 25 | x | + | 1 40 | ( | 0 | + | x | ) | x |
21 125 | x | = | 3 25 | x | + | 1 40 | ( | 0 | + | x | ) | x |
| Right side of the equation = | 3 25 | x | + | 1 40 | × | 0 | x | + | 1 40 | x | x |
| = | 3 25 | x | + | 0 | x | + | 1 40 | x | x |
| = | 3 25 | x | + | 1 40 | x | x |
21 125 | x | = | 3 25 | x | + | 1 40 | x | x |
| x2= | 48 25 |