100 | = | 1 2 | X | + | 1 20 | ( | 1000 | − | X | ) |
Right side of the equation = | 1 2 | X | + | 1 20 | × | 1000 | − | 1 20 | X |
= | 1 2 | X | + | 50 | − | 1 20 | X |
= | 9 20 | X | + | 50 |
100 | = | 9 20 | X | + | 50 |
- | 9 20 | X | = | 50 | − | 100 |
- | 9 20 | X | = | - | 50 |
50 | = | 9 20 | X |
9 20 | X | = | 50 |
X | = | 50 | ÷ | 9 20 |
= | 50 | × | 20 9 |
X | = | 1000 9 |
X | = | 111.111111 |