( | 301 2 | + | 789 2 | ) | ÷ | 30 | × | x | + | 373 2 | ÷ | 30 | × | ( | x | + | 15 | ) | + | 60 | ÷ | 30 | × | ( | x | + | 30 | ) | = | 786 |
方程左边 = | ( | 301 2 | + | 789 2 | ) | × | 1 30 | x | + | 373 60 | ( | x | + | 15 | ) | + | 2 | ( | x | + | 30 | ) |
( | 301 2 | + | 789 2 | ) | × | 1 30 | x | + | 373 60 | ( | x | + | 15 | ) | + | 2 | ( | x | + | 30 | ) | = | 786 |
方程左边 = | 301 2 | × | 1 30 | x | + | 789 2 | × | 1 30 | x | + | 373 60 | ( | x | + | 15 | ) | + | 2 | ( | x | + | 30 | ) |
= | 301 60 | x | + | 263 20 | x | + | 373 60 | ( | x | + | 15 | ) | + | 2 | ( | x | + | 30 | ) |
= | 109 6 | x | + | 373 60 | ( | x | + | 15 | ) | + | 2 | ( | x | + | 30 | ) |
= | 109 6 | x | + | 373 60 | x | + | 373 60 | × | 15 | + | 2 | ( | x | + | 30 | ) |
= | 109 6 | x | + | 373 60 | x | + | 373 4 | + | 2 | ( | x | + | 30 | ) |
= | 1463 60 | x | + | 373 4 | + | 2 | ( | x | + | 30 | ) |
= | 1463 60 | x | + | 373 4 | + | 2 | x | + | 2 | × | 30 |
= | 1463 60 | x | + | 373 4 | + | 2 | x | + | 60 |
= | 1583 60 | x | + | 613 4 |
1583 60 | x | + | 613 4 | = | 786 |
1583 60 | x | = | 786 | − | 613 4 |
1583 60 | x | = | 2531 4 |
x | = | 2531 4 | ÷ | 1583 60 |
= | 2531 4 | × | 60 1583 |
= | 2531 | × | 15 1583 |
x | = | 37965 1583 |
x | = | 23.982944 |