( | 347 2 | + | 729 2 | ) | ÷ | 29 | × | x | + | 145 | ÷ | 29 | × | ( | x | + | 15 | ) | + | 87 | ÷ | 29 | × | ( | x | + | 30 | ) | = | 2130 |
方程左边 = | ( | 347 2 | + | 729 2 | ) | × | 1 29 | x | + | 5 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
( | 347 2 | + | 729 2 | ) | × | 1 29 | x | + | 5 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) | = | 2130 |
方程左边 = | 347 2 | × | 1 29 | x | + | 729 2 | × | 1 29 | x | + | 5 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
= | 347 58 | x | + | 729 58 | x | + | 5 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
= | 538 29 | x | + | 5 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
= | 538 29 | x | + | 5 | x | + | 5 | × | 15 | + | 3 | ( | x | + | 30 | ) |
= | 538 29 | x | + | 5 | x | + | 75 | + | 3 | ( | x | + | 30 | ) |
= | 683 29 | x | + | 75 | + | 3 | ( | x | + | 30 | ) |
= | 683 29 | x | + | 75 | + | 3 | x | + | 3 | × | 30 |
= | 683 29 | x | + | 75 | + | 3 | x | + | 90 |
= | 770 29 | x | + | 165 |
770 29 | x | + | 165 | = | 2130 |
770 29 | x | = | 2130 | − | 165 |
770 29 | x | = | 1965 |
x | = | 1965 | ÷ | 770 29 |
= | 1965 | × | 29 770 |
= | 393 | × | 29 154 |
x | = | 11397 154 |
x | = | 74.006494 |