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All that changing the subject of the formula means is basically getting a letter on its own on one side of the equation. To begin, let's take a relatively simple example.
Make x ...
There are 3 rules to answering Maths questions:
whenever we solve an equation we want to get the unknown (x) alone on one side of the equals sign, but remember whatever we do to one sign of the equation, we have to do to the other. So lets start by ...
1 - We treat an inequality sign like an equals sign (unless we divide by a negative number).
2 - Rearrange the inequality to get all the ys on one side and all the numbers on the other si...
1 - First we need to get all the x values on one side and all the numbers on the otherside of the equals sign.
2 - We then need simplify the equation to get 1 x.
Solve 5x - ...
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