( | X | − | 15 | ) | ÷ | 45 | = | ( | X | + | 180 | ) | ÷ | 60 |
Left side of the equation = | X | × | 1 45 | − | 15 | × | 1 45 |
= | X | × | 1 45 | − | 1 3 |
1 45 | X | − | 1 3 | = | ( | X | + | 180 | ) | ÷ | 60 |
Right side of the equation = | X | × | 1 60 | + | 180 | × | 1 60 |
= | X | × | 1 60 | + | 3 |
1 45 | X | − | 1 3 | = | 1 60 | X | + | 3 |
1 45 | X | − | 1 60 | X | = | 3 | + | 1 3 |
1 180 | X | = | 3 | + | 1 3 |
1 180 | X | = | 10 3 |
X | = | 10 3 | ÷ | 1 180 |
= | 10 3 | × | 180 |
= | 10 | × | 60 |
X | = | 600 |