( | 163 | + | 312 | ) | ÷ | 31 | × | x | + | 177 | ÷ | 31 | × | ( | x | + | 15 | ) | + | 124 | ÷ | 31 | × | ( | x | + | 30 | ) | = | 1266 |
方程左边 = | ( | 163 | + | 312 | ) | × | 1 31 | x | + | 177 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
( | 163 | + | 312 | ) | × | 1 31 | x | + | 177 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) | = | 1266 |
方程左边 = | 163 | × | 1 31 | x | + | 312 | × | 1 31 | x | + | 177 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 163 31 | x | + | 312 31 | x | + | 177 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 475 31 | x | + | 177 31 | ( | x | + | 15 | ) | + | 4 | ( | x | + | 30 | ) |
= | 475 31 | x | + | 177 31 | x | + | 177 31 | × | 15 | + | 4 | ( | x | + | 30 | ) |
= | 475 31 | x | + | 177 31 | x | + | 2655 31 | + | 4 | ( | x | + | 30 | ) |
= | 652 31 | x | + | 2655 31 | + | 4 | ( | x | + | 30 | ) |
= | 652 31 | x | + | 2655 31 | + | 4 | x | + | 4 | × | 30 |
= | 652 31 | x | + | 2655 31 | + | 4 | x | + | 120 |
= | 776 31 | x | + | 6375 31 |
776 31 | x | + | 6375 31 | = | 1266 |
776 31 | x | = | 1266 | − | 6375 31 |
776 31 | x | = | 32871 31 |
x | = | 32871 31 | ÷ | 776 31 |
= | 32871 31 | × | 31 776 |
= | 32871 | × | 1 776 |
x | = | 32871 776 |
x | = | 42.359536 |