( | x | − | 1000 | − | 5000 | − | 2300 | ) | × | 7 20 | = | 4445 |
Left side of the equation = | x | × | 7 20 | − | 1000 | × | 7 20 | − | 5000 | × | 7 20 | − | 2300 | × | 7 20 |
= | x | × | 7 20 | − | 350 | − | 1750 | − | 805 |
= | 7 20 | x | − | 2905 |
7 20 | x | − | 2905 | = | 4445 |
7 20 | x | = | 4445 | + | 2905 |
7 20 | x | = | 7350 |
x | = | 7350 | ÷ | 7 20 |
= | 7350 | × | 20 7 |
= | 1050 | × | 20 |
x | = | 21000 |