Rearranging the Equation
To solve an equation for a variable, it is often necessary to reorganise the equation.
This is rearranging the equation.
This means we take numbers and variable across the equals (=) sign to get the subject we wish to solve isolated on one side of the equation. We rearrange the equation.
There are two important things to remember;
♦ We can do anything to one side of the equation if we do the same to the other. For example we could add 5 to both sides of the equation and things will stay in balance
♦ If a number or variable is moved to the other side of the equation the operation must be reversed by doing the opposite operation on both sides of the equals sign.
|Addition +||Subtraction –|
|Multiplication x||Division ÷|
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