| ( | 89 | + | 300 | + | 90 | + | 87 | + | x | ) | ÷ | 7 | = | 95 |
| Left side of the equation = | 89 | × | 1 7 | + | 300 | × | 1 7 | + | 90 | × | 1 7 | + | 87 | × | 1 7 | + | x | × | 1 7 |
| = | 89 7 | + | 300 7 | + | 90 7 | + | 87 7 | + | x | × | 1 7 |
| = | 566 7 | + | 1 7 | x |
566 7 | + | 1 7 | x | = | 95 |
1 7 | x | = | 95 | − | 566 7 |
1 7 | x | = | 99 7 |
| x | = | 99 7 | ÷ | 1 7 |
| = | 99 7 | × | 7 |
| = | 99 | × | 1 |
| x | = | 99 |