3 | × | 90 | ÷ | a | = | ( | 3 | − | a | ) | ( | 60 | ÷ | ( | 3 | − | a | ) | ) |
Multiply both sides of the equation by: | a |
3 | × | 90 | = | ( | 3 | − | a | ) | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a |
3 | × | 90 | = | 3 | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a | − | a | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a |
270 | = | 3 | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a | − | a | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a |
270 | = | 3 | × | 60 | ÷ | ( | 3 | − | a | ) | × | a | − | a | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a |
270 | = | 180 | ÷ | ( | 3 | − | a | ) | × | a | − | a | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a |
Multiply both sides of the equation by: | ( | 3 | − | a | ) |
270 | ( | 3 | − | a | ) | = | 180 | a | − | a | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a | ( | 3 | − | a | ) |
270 | × | 3 | − | 270 | a | = | 180 | a | − | a | ( | 60 | ÷ | ( | 3 | − | a | ) | ) | a | ( | 3 | − | a | ) |
270 | × | 3 | − | 270 | a | = | 180 | a | − | a | × | 60 | ÷ | ( | 3 | − | a | ) | × | a | ( | 3 | − | a | ) |
810 | − | 270 | a | = | 180 | a | − | a | × | 60 | ÷ | ( | 3 | − | a | ) | × | a | ( | 3 | − | a | ) |
Multiply both sides of the equation by: | ( | 3 | − | a | ) |
810 | ( | 3 | − | a | ) | − | 270 | a | ( | 3 | − | a | ) | = | 180 | a | ( | 3 | − | a | ) | − | a | × | 60 | a | ( | 3 | − | a | ) |
810 | × | 3 | − | 810 | a | − | 270 | a | ( | 3 | − | a | ) | = | 180 | a | ( | 3 | − | a | ) | − | a | × | 60 | a | ( | 3 | − | a | ) |
810 | × | 3 | − | 810 | a | − | 270 | a | ( | 3 | − | a | ) | = | 180 | a | × | 3 | − | 180 | a | a | − | a | × | 60 | a | ( | 3 | − | a | ) |
2430 | − | 810 | a | − | 270 | a | ( | 3 | − | a | ) | = | 540 | a | − | 180 | a | a | − | a | × | 60 | a | ( | 3 | − | a | ) |
2430 | − | 810 | a | − | 270 | a | × | 3 | + | 270 | a | a | = | 540 | a | − | 180 | a | a | − | a | × | 60 | a | ( | 3 | − | a | ) |
2430 | − | 810 | a | − | 270 | a | × | 3 | + | 270 | a | a | = | 540 | a | − | 180 | a | a | − | a | × | 60 | a | × | 3 | + | a | × | 60 | a |
2430 | − | 810 | a | − | 810 | a | + | 270 | a | a | = | 540 | a | − | 180 | a | a | − | a | × | 180 | a | + | a | × | 60 | a | a |
2430 | − | 1620 | a | + | 270 | a | a | = | 540 | a | − | 180 | a | a | − | a | × | 180 | a | + | a | × | 60 | a | a |
a1= | 9 2 |