3 4 | = | 1 2 | + | ( | x | − | 30 | ) | × | 1 20 | − | 15 | × | 1 20 |
Right side of the equation = | 1 2 | + | ( | x | − | 30 | ) | × | 1 20 | − | 3 4 |
= | - | 1 4 | + | ( | x | − | 30 | ) | × | 1 20 |
3 4 | = | - | 1 4 | + | ( | x | − | 30 | ) | × | 1 20 |
Right side of the equation = | - | 1 4 | + | x | × | 1 20 | − | 30 | × | 1 20 |
= | - | 1 4 | + | x | × | 1 20 | − | 3 2 |
= | - | 7 4 | + | 1 20 | x |
3 4 | = | - | 7 4 | + | 1 20 | x |
- | 1 20 | x | = | - | 7 4 | − | 3 4 |
- | 1 20 | x | = | - | 5 2 |
5 2 | = | 1 20 | x |
1 20 | x | = | 5 2 |
x | = | 5 2 | ÷ | 1 20 |
= | 5 2 | × | 20 |
= | 5 | × | 10 |
x | = | 50 |