| 52 | × | 2 | x | + | 48 | ( | x | + | 5 | ) | = | ( | 48 | + | 52 | ) | × | 78 |
| Left side of the equation = | 104 | x | + | 48 | ( | x | + | 5 | ) |
| 104 | x | + | 48 | ( | x | + | 5 | ) | = | ( | 48 | + | 52 | ) | × | 78 |
| Left side of the equation = | 104 | x | + | 48 | x | + | 48 | × | 5 |
| = | 104 | x | + | 48 | x | + | 240 |
| = | 152 | x | + | 240 |
| 152 | x | + | 240 | = | ( | 48 | + | 52 | ) | × | 78 |
| Right side of the equation = | 48 | × | 78 | + | 52 | × | 78 |
| = | 3744 | + | 4056 |
| = | 7800 |
| 152 | x | + | 240 | = | 7800 |
| 152 | x | = | 7800 | − | 240 |
| 152 | x | = | 7560 |
| x | = | 7560 | ÷ | 152 |
| = | 7560 | × | 1 152 |
| = | 945 | × | 1 19 |
| x | = | 945 19 |
| x | = | 49.736842 |