Algebra

How do I solve an equation? ... continued ...


Now, lets try a slightly different method of solving an equation ...

Say, we wanted to solve the equation ...


Instead of subtracting 1 from both sides of the equation and dividing both sides of the equation by 3, we can move parts of the equation across the equals sign.




If we move a bit that was being added on one side, then we subtract it from the other side.

If we move a bit that was being subtracted on one side, then we add it to the other side.



So, now our equation is ...

Similarly, if we move a bit that is dividing on one side, then we multiply it on the other side.



Let's show this with another example ...



Solve the equation ...