| ( | 26 5 | x | + | 240 | ) | ( | x | + | 1430 | ) | = | ( | 5 | x | + | 230 | x | ) | ( | x | + | 1200 | ) |
| Left side of the equation = | 26 5 | x | ( | x | + | 1430 | ) | + | 240 | ( | x | + | 1430 | ) |
| = | 26 5 | x | x | + | 26 5 | x | × | 1430 | + | 240 | ( | x | + | 1430 | ) |
| = | 26 5 | x | x | + | 7436 | x | + | 240 | ( | x | + | 1430 | ) |
| = | 26 5 | x | x | + | 7436 | x | + | 240 | x | + | 240 | × | 1430 |
| = | 26 5 | x | x | + | 7436 | x | + | 240 | x | + | 343200 |
| = | 26 5 | x | x | + | 7676 | x | + | 343200 |
26 5 | x | x | + | 7676 | x | + | 343200 | = | ( | 5 | x | + | 230 | x | ) | ( | x | + | 1200 | ) |
| Right side of the equation = | 5 | x | ( | x | + | 1200 | ) | + | 230 | x | ( | x | + | 1200 | ) |
| = | 5 | x | x | + | 5 | x | × | 1200 | + | 230 | x | ( | x | + | 1200 | ) |
| = | 5 | x | x | + | 6000 | x | + | 230 | x | ( | x | + | 1200 | ) |
| = | 5 | x | x | + | 6000 | x | + | 230 | x | x | + | 230 | x | × | 1200 |
| = | 5 | x | x | + | 6000 | x | + | 230 | x | x | + | 276000 | x |
| = | 5 | x | x | + | 282000 | x | + | 230 | x | x |
26 5 | x | x | + | 7676 | x | + | 343200 | = | 5 | x | x | + | 282000 | x | + | 230 | x | x |