( | 186 | + | 270 | ) | ÷ | 31 | × | x | + | 248 | ÷ | 31 | × | ( | x | + | 15 | ) | + | 109 | ÷ | 31 | × | ( | x | + | 30 | ) | = | 1372 |
方程左边 = | ( | 186 | + | 270 | ) | × | 1 31 | x | + | 8 | ( | x | + | 15 | ) | + | 109 31 | ( | x | + | 30 | ) |
( | 186 | + | 270 | ) | × | 1 31 | x | + | 8 | ( | x | + | 15 | ) | + | 109 31 | ( | x | + | 30 | ) | = | 1372 |
方程左边 = | 186 | × | 1 31 | x | + | 270 | × | 1 31 | x | + | 8 | ( | x | + | 15 | ) | + | 109 31 | ( | x | + | 30 | ) |
= | 6 | x | + | 270 31 | x | + | 8 | ( | x | + | 15 | ) | + | 109 31 | ( | x | + | 30 | ) |
= | 456 31 | x | + | 8 | ( | x | + | 15 | ) | + | 109 31 | ( | x | + | 30 | ) |
= | 456 31 | x | + | 8 | x | + | 8 | × | 15 | + | 109 31 | ( | x | + | 30 | ) |
= | 456 31 | x | + | 8 | x | + | 120 | + | 109 31 | ( | x | + | 30 | ) |
= | 704 31 | x | + | 120 | + | 109 31 | ( | x | + | 30 | ) |
= | 704 31 | x | + | 120 | + | 109 31 | x | + | 109 31 | × | 30 |
= | 704 31 | x | + | 120 | + | 109 31 | x | + | 3270 31 |
= | 813 31 | x | + | 6990 31 |
813 31 | x | + | 6990 31 | = | 1372 |
813 31 | x | = | 1372 | − | 6990 31 |
813 31 | x | = | 35542 31 |
x | = | 35542 31 | ÷ | 813 31 |
= | 35542 31 | × | 31 813 |
= | 35542 | × | 1 813 |
x | = | 35542 813 |
x | = | 43.717097 |