x | × | 4 | − | 24 | x | × | 3 | − | 168 | x | × | 2 | − | 100 | x | + | 400 | = | 0 |
Left side of the equation = | x | × | 4 | − | 72 | x | − | 336 | x | − | 100 | x | + | 400 |
= | - | 504 | x | + | 400 |
- | 504 | x | + | 400 | = | 0 |
- | 504 | x | = | 0 | − | 400 |
- | 504 | x | = | - | 400 |
400 | = | 504 | x |
504 | x | = | 400 |
x | = | 400 | ÷ | 504 |
= | 400 | × | 1 504 |
= | 50 | × | 1 63 |
x | = | 50 63 |
x | = | 0.793651 |