7 20 | = | ( | x | + | 800 | + | 1500 | ) | ÷ | 26000 |
Right side of the equation = | x | × | 1 26000 | + | 800 | × | 1 26000 | + | 1500 | × | 1 26000 |
= | x | × | 1 26000 | + | 2 65 | + | 3 52 |
= | 1 26000 | x | + | 23 260 |
7 20 | = | 1 26000 | x | + | 23 260 |
- | 1 26000 | x | = | 23 260 | − | 7 20 |
- | 1 26000 | x | = | - | 17 65 |
17 65 | = | 1 26000 | x |
1 26000 | x | = | 17 65 |
x | = | 17 65 | ÷ | 1 26000 |
= | 17 65 | × | 26000 |
= | 17 | × | 400 |
x | = | 6800 |