x | − | ( | ( | x | − | 5000 | × | 9 | ) | × | 1 10 | − | 2520 | ) | = | 148500 |
Left side of the equation = | x | − | ( | x | − | 5000 | × | 9 | ) | × | 1 10 | + | 2520 |
= | x | − | x | × | 1 10 | + | 5000 | × | 9 | × | 1 10 | + | 2520 |
= | x | − | x | × | 1 10 | + | 4500 | + | 2520 |
= | 9 10 | x | + | 7020 |
9 10 | x | + | 7020 | = | 148500 |
9 10 | x | = | 148500 | − | 7020 |
9 10 | x | = | 141480 |
x | = | 141480 | ÷ | 9 10 |
= | 141480 | × | 10 9 |
= | 15720 | × | 10 |
x | = | 157200 |