( | 180 | + | 617 2 | ) | ÷ | 30 | × | x | + | 199 | ÷ | 30 | × | ( | x | + | 15 | ) | + | 104 | ÷ | 30 | × | ( | x | + | 30 | ) | = | 890 |
方程左边 = | ( | 180 | + | 617 2 | ) | × | 1 30 | x | + | 199 30 | ( | x | + | 15 | ) | + | 52 15 | ( | x | + | 30 | ) |
( | 180 | + | 617 2 | ) | × | 1 30 | x | + | 199 30 | ( | x | + | 15 | ) | + | 52 15 | ( | x | + | 30 | ) | = | 890 |
方程左边 = | 180 | × | 1 30 | x | + | 617 2 | × | 1 30 | x | + | 199 30 | ( | x | + | 15 | ) | + | 52 15 | ( | x | + | 30 | ) |
= | 6 | x | + | 617 60 | x | + | 199 30 | ( | x | + | 15 | ) | + | 52 15 | ( | x | + | 30 | ) |
= | 977 60 | x | + | 199 30 | ( | x | + | 15 | ) | + | 52 15 | ( | x | + | 30 | ) |
= | 977 60 | x | + | 199 30 | x | + | 199 30 | × | 15 | + | 52 15 | ( | x | + | 30 | ) |
= | 977 60 | x | + | 199 30 | x | + | 199 2 | + | 52 15 | ( | x | + | 30 | ) |
= | 275 12 | x | + | 199 2 | + | 52 15 | ( | x | + | 30 | ) |
= | 275 12 | x | + | 199 2 | + | 52 15 | x | + | 52 15 | × | 30 |
= | 275 12 | x | + | 199 2 | + | 52 15 | x | + | 104 |
= | 1583 60 | x | + | 407 2 |
1583 60 | x | + | 407 2 | = | 890 |
1583 60 | x | = | 890 | − | 407 2 |
1583 60 | x | = | 1373 2 |
x | = | 1373 2 | ÷ | 1583 60 |
= | 1373 2 | × | 60 1583 |
= | 1373 | × | 30 1583 |
x | = | 41190 1583 |
x | = | 26.020215 |