121 10 | x | = | ( | 7 2 | + | x | ) | × | 399 50 |
方程右边 = | 7 2 | × | 399 50 | + | x | × | 399 50 |
= | 2793 100 | + | x | × | 399 50 |
121 10 | x | = | 2793 100 | + | 399 50 | x |
121 10 | x | − | 399 50 | x | = | 2793 100 |
103 25 | x | = | 2793 100 |
x | = | 2793 100 | ÷ | 103 25 |
= | 2793 100 | × | 25 103 |
= | 2793 4 | × | 1 103 |
x | = | 2793 412 |
x | = | 6.779126 |