( | 385 2 | + | 309 | ) | ÷ | 31 | × | x | + | 186 | ÷ | 31 | × | ( | x | + | 15 | ) | + | 124 | ÷ | 31 | × | ( | x | + | 30 | ) | = | 1122 |
方程左边 = | ( | 385 2 | + | 309 | ) | × | 1 31 | x | + | 6 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
( | 385 2 | + | 309 | ) | × | 1 31 | x | + | 6 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) | = | 1122 |
方程左边 = | 385 2 | × | 1 31 | x | + | 309 | × | 1 31 | x | + | 6 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 385 62 | x | + | 309 31 | x | + | 6 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 1003 62 | x | + | 6 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 1003 62 | x | + | 6 | x | + | 6 | × | 15 | + | 4 | ( | x | + | 30 | ) |
= | 1003 62 | x | + | 6 | x | + | 90 | + | 4 | ( | x | + | 30 | ) |
= | 1375 62 | x | + | 90 | + | 4 | ( | x | + | 30 | ) |
= | 1375 62 | x | + | 90 | + | 4 | x | + | 4 | × | 30 |
= | 1375 62 | x | + | 90 | + | 4 | x | + | 120 |
= | 1623 62 | x | + | 210 |
1623 62 | x | + | 210 | = | 1122 |
1623 62 | x | = | 1122 | − | 210 |
1623 62 | x | = | 912 |
x | = | 912 | ÷ | 1623 62 |
= | 912 | × | 62 1623 |
= | 304 | × | 62 541 |
x | = | 18848 541 |
x | = | 34.839187 |