( | 188 | + | 344 | ) | ÷ | 30 | × | x | + | 180 | ÷ | 30 | × | ( | x | + | 15 | ) | + | 90 | ÷ | 30 | × | ( | x | + | 30 | ) | = | 1445 |
方程左边 = | ( | 188 | + | 344 | ) | × | 1 30 | x | + | 6 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
( | 188 | + | 344 | ) | × | 1 30 | x | + | 6 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) | = | 1445 |
方程左边 = | 188 | × | 1 30 | x | + | 344 | × | 1 30 | x | + | 6 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
= | 94 15 | x | + | 172 15 | x | + | 6 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
= | 266 15 | x | + | 6 | ( | x | + | 15 | ) | + | 3 | ( | x | + | 30 | ) |
= | 266 15 | x | + | 6 | x | + | 6 | × | 15 | + | 3 | ( | x | + | 30 | ) |
= | 266 15 | x | + | 6 | x | + | 90 | + | 3 | ( | x | + | 30 | ) |
= | 356 15 | x | + | 90 | + | 3 | ( | x | + | 30 | ) |
= | 356 15 | x | + | 90 | + | 3 | x | + | 3 | × | 30 |
= | 356 15 | x | + | 90 | + | 3 | x | + | 90 |
= | 401 15 | x | + | 180 |
401 15 | x | + | 180 | = | 1445 |
401 15 | x | = | 1445 | − | 180 |
401 15 | x | = | 1265 |
x | = | 1265 | ÷ | 401 15 |
= | 1265 | × | 15 401 |
x | = | 18975 401 |
x | = | 47.319202 |