( | ( | 691 25 | x | + | 5 | ) | ÷ | x | × | 256 | ) | ÷ | 256 | = | 2689 100 |
( | 691 25 | x | + | 5 | ) | ÷ | x | × | 256 | ÷ | 256 | = | 2689 100 |
( | 691 25 | x | + | 5 | ) | ÷ | x | × | 1 | = | 2689 100 |
方程两边同时乘以: | x |
( | 691 25 | x | + | 5 | ) | × | 1 | = | 2689 100 | x |
691 25 | x | × | 1 | + | 5 | × | 1 | = | 2689 100 | x |
691 25 | x | + | 5 | = | 2689 100 | x |
691 25 | x | − | 2689 100 | x | = | - | 5 |
3 4 | x | = | - | 5 |
x | = | - | 5 | ÷ | 3 4 |
= | - | 5 | × | 4 3 |
x | = | - | 20 3 |
x | = | - 6.666667 |