3 5 | + | 3 5 | g | = | 3 5 | + | 3 5 | g | ÷ | 12 | + | g |
| Right side of the equation = | 3 5 | + | 1 20 | g | + | g |
| = | 3 5 | + | 21 20 | g |
3 5 | + | 3 5 | g | = | 3 5 | + | 21 20 | g |
3 5 | g | − | 21 20 | g | = | 3 5 | − | 3 5 |
| - | 9 20 | g | = | 3 5 | − | 3 5 |
| - | 9 20 | g | = | 0 |
| - | 0 | = | 9 20 | g |
9 20 | g | = | - | 0 |
| g | = | - | 0 | ÷ | 9 20 |
| = | - | 0 | × | 20 9 |
| = | - | 0 | × | 4 9 |
| g | = | 0 |