13 2 | + | 9 100 | x | = | 8 125 | ( | 130 | + | x | ) |
| Right side of the equation = | 8 125 | × | 130 | + | 8 125 | x |
| = | 208 25 | + | 8 125 | x |
13 2 | + | 9 100 | x | = | 208 25 | + | 8 125 | x |
9 100 | x | − | 8 125 | x | = | 208 25 | − | 13 2 |
13 500 | x | = | 208 25 | − | 13 2 |
13 500 | x | = | 91 50 |
| x | = | 91 50 | ÷ | 13 500 |
| = | 91 50 | × | 500 13 |
| = | 7 | × | 10 |
| x | = | 70 |