x | ( | 12 | ÷ | 28 | ) | + | ( | 76 5 | − | x | ) | ( | 12 | ÷ | 44 | ) | = | 24 5 |
方程左边 = | x | × | 12 | ÷ | 28 | + | ( | 76 5 | − | x | ) | ( | 12 | ÷ | 44 | ) |
= | x | × | 3 7 | + | ( | 76 5 | − | x | ) | ( | 12 | ÷ | 44 | ) |
= | 3 7 | x | + | 76 5 | ( | 12 | ÷ | 44 | ) | − | x | ( | 12 | ÷ | 44 | ) |
= | 3 7 | x | + | 76 5 | × | 12 | ÷ | 44 | − | x | ( | 12 | ÷ | 44 | ) |
= | 3 7 | x | + | 228 55 | − | x | ( | 12 | ÷ | 44 | ) |
= | 3 7 | x | + | 228 55 | − | x | × | 12 | ÷ | 44 |
= | 3 7 | x | + | 228 55 | − | x | × | 3 11 |
= | 12 77 | x | + | 228 55 |
12 77 | x | + | 228 55 | = | 24 5 |
12 77 | x | = | 24 5 | − | 228 55 |
12 77 | x | = | 36 55 |
x | = | 36 55 | ÷ | 12 77 |
= | 36 55 | × | 77 12 |
= | 3 5 | × | 7 |
x | = | 21 5 |
x | = | 4.2 |