If every species had started with a 2 for example each coefficient would be divided by a common divisor to write the net ionic equation using the smallest integer values. For every transaction both sides of this equation must have an equal net effect. CFIs accounting fundamentals course will help you better understand these examples.
There are obvious exceptions to this for instance the equation that spec.
The following are some examples of equation. 2x 2 5x 12 0. 2x² - 64 0. These equations contains a trigonometric function.