| x | x | ÷ | ( | 600 | × | 600 | ) | + | ( | 120 | × | 120 | − | 240 | x | + | x | x | ) | ÷ | ( | 90 | × | 90 | ) | = | 1 |
| Multiply both sides of the equation by: | ( | 600 | × | 600 | ) |
| x | x | + | ( | 120 | × | 120 | − | 240 | x | + | x | x | ) | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | = | 1 | ( | 600 | × | 600 | ) |
| x | x | + | 120 | × | 120 | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | + | x | x | = | 1 | ( | 600 | × | 600 | ) |
| x | x | + | 120 | × | 120 | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | + | x | x | = | 1 | × | 600 | × | 600 |
| x | x | + | 14400 | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | + | x | x | ÷ | ( | 90 | × | 90 | ) | = | 360000 |
| Multiply both sides of the equation by: | ( | 90 | × | 90 | ) |
| x | x | ( | 90 | × | 90 | ) | + | 14400 | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | + | x | x | = | 360000 | ( | 90 | × | 90 | ) |
| x | x | × | 90 | × | 90 | + | 14400 | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | + | x | = | 360000 | ( | 90 | × | 90 | ) |
| x | x | × | 90 | × | 90 | + | 14400 | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | + | x | = | 360000 | × | 90 | × | 90 |
| x | x | × | 8100 | + | 14400 | ( | 600 | × | 600 | ) | − | 240 | x | ÷ | ( | 90 | × | 90 | ) | × | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | + | x | x | = | 2916000000 |
| Multiply both sides of the equation by: | ( | 90 | × | 90 | ) |
| x | x | × | 8100 | ( | 90 | × | 90 | ) | + | 14400 | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | − | 240 | x | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | + | x | = | 2916000000 | ( | 90 | × | 90 | ) |
| x | x | × | 8100 | × | 90 | × | 90 | + | 14400 | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | − | 240 | x | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | = | 2916000000 | ( | 90 | × | 90 | ) |
| x | x | × | 8100 | × | 90 | × | 90 | + | 14400 | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | − | 240 | x | ( | 600 | × | 600 | ) | ( | 90 | × | 90 | ) | = | 2916000000 | × | 90 | × | 90 |