( | 8450 | + | 50 | + | X | ) | × | 13 400 | = | 4 | X |
方程左边 = | 8450 | × | 13 400 | + | 50 | × | 13 400 | + | X | × | 13 400 |
= | 2197 8 | + | 13 8 | + | X | × | 13 400 |
= | 1105 4 | + | 13 400 | X |
1105 4 | + | 13 400 | X | = | 4 | X |
13 400 | X | − | 4 | X | = | - | 1105 4 |
- | 1587 400 | X | = | - | 1105 4 |
1105 4 | = | 1587 400 | X |
1587 400 | X | = | 1105 4 |
X | = | 1105 4 | ÷ | 1587 400 |
= | 1105 4 | × | 400 1587 |
= | 1105 | × | 100 1587 |
X | = | 110500 1587 |
X | = | 69.628229 |