| ( | 31314649881 25 | + | a | ) | ÷ | ( | 153440223019 100 | + | a | ) | = | 3 4 |
| Multiply both sides of the equation by: | ( | 153440223019 100 | + | a | ) |
| ( | 31314649881 25 | + | a | ) | = | 3 4 | ( | 153440223019 100 | + | a | ) |
31314649881 25 | + | a | = | 3 4 | ( | 153440223019 100 | + | a | ) |
31314649881 25 | + | a | = | 3 4 | × | 153440223019 100 | + | 3 4 | a |