( | ( | 31 20 | × | 15 | × | 17 20 | x | − | 1029 50 | ) | + | ( | 31 20 | × | 15 | × | 17 20 | × | 3 5 | − | 1029 50 | ) | ) | = | 0 |
方程左边 = | ( | 31 20 | × | 15 | × | 17 20 | x | − | 1029 50 | ) | + | ( | 31 20 | × | 15 | × | 17 20 | × | 3 5 | − | 1029 50 | ) |
= | 31 20 | × | 15 | × | 17 20 | x | − | 1029 50 | + | ( | 31 20 | × | 15 | × | 17 20 | × | 3 5 | − | 1029 50 | ) |
= | 1581 80 | x | − | 1029 50 | + | ( | 31 20 | × | 15 | × | 17 20 | × | 3 5 | − | 1029 50 | ) |
= | 1581 80 | x | − | 1029 50 | + | 31 20 | × | 15 | × | 17 20 | × | 3 5 | − | 1029 50 |
= | 1581 80 | x | − | 1029 50 | + | 4743 400 | − | 1029 50 |
= | 1581 80 | x | − | 11721 400 |
1581 80 | x | − | 11721 400 | = | 0 |
1581 80 | x | = | 0 | + | 11721 400 |
1581 80 | x | = | 11721 400 |
x | = | 11721 400 | ÷ | 1581 80 |
= | 11721 400 | × | 80 1581 |
= | 3907 5 | × | 1 527 |
x | = | 3907 2635 |
x | = | 1.482732 |