299 | ÷ | 31 | × | x | + | 459 2 | ÷ | 31 | × | ( | x | + | 15 | ) | + | 93 | ÷ | 31 | × | ( | x | + | 30 | ) | = | 911 |
方程左边 = | 299 31 | x | + | 459 62 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
299 31 | x | + | 459 62 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) | = | 911 |
方程左边 = | 299 31 | x | + | 459 62 | x | + | 459 62 | × | 15 | + | 3 | ( | x | + | 30 | ) |
= | 299 31 | x | + | 459 62 | x | + | 6885 62 | + | 3 | ( | x | + | 30 | ) |
= | 1057 62 | x | + | 6885 62 | + | 3 | ( | x | + | 30 | ) |
= | 1057 62 | x | + | 6885 62 | + | 3 | x | + | 3 | × | 30 |
= | 1057 62 | x | + | 6885 62 | + | 3 | x | + | 90 |
= | 1243 62 | x | + | 12465 62 |
1243 62 | x | + | 12465 62 | = | 911 |
1243 62 | x | = | 911 | − | 12465 62 |
1243 62 | x | = | 44017 62 |
x | = | 44017 62 | ÷ | 1243 62 |
= | 44017 62 | × | 62 1243 |
= | 44017 | × | 1 1243 |
x | = | 44017 1243 |
x | = | 35.411907 |