( | x | × | 9 10 | ) | − | 150 | − | ( | ( | x | × | 9 10 | ) | − | 150 | ) | ( | 1 20 | + | 9 500 | ) | = | 0 |
方程左边 = | x | × | 9 10 | − | 150 | − | ( | ( | x | × | 9 10 | ) | − | 150 | ) | ( | 1 20 | + | 9 500 | ) |
= | 9 10 | x | − | 150 | − | ( | x | × | 9 10 | ) | ( | 1 20 | + | 9 500 | ) | + | 150 | ( | 1 20 | + | 9 500 | ) |
= | 9 10 | x | − | 150 | − | x | × | 9 10 | ( | 1 20 | + | 9 500 | ) | + | 150 | ( | 1 20 | + | 9 500 | ) |
= | 9 10 | x | − | 150 | − | x | × | 9 10 | × | 1 20 | − | x | × | 9 10 | × | 9 500 | + | 150 | ( | 1 20 | + | 9 500 | ) |
= | 9 10 | x | − | 150 | − | x | × | 9 200 | − | x | × | 81 5000 | + | 150 | ( | 1 20 | + | 9 500 | ) |
= | 2097 2500 | x | − | 150 | + | 150 | ( | 1 20 | + | 9 500 | ) |
= | 2097 2500 | x | − | 150 | + | 150 | × | 1 20 | + | 150 | × | 9 500 |
= | 2097 2500 | x | − | 150 | + | 15 2 | + | 27 10 |
= | 2097 2500 | x | − | 699 5 |
2097 2500 | x | − | 699 5 | = | 0 |
2097 2500 | x | = | 0 | + | 699 5 |
2097 2500 | x | = | 699 5 |
x | = | 699 5 | ÷ | 2097 2500 |
= | 699 5 | × | 2500 2097 |
= | 233 | × | 500 699 |
x | = | 116500 699 |
x | = | 500 3 |
x | = | 166.666667 |