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# Factorise the following equation: 4a + 12b  Hint: Analyse the equation given in the question, try to take a common number out.
$\Rightarrow 4a + 12b$
Split the number and variables such that there is a common term,
$\Rightarrow 4 \times a + 4 \times 3 \times b$
As we can see $4$ is a common number in both the terms,
Therefore,
$\Rightarrow 4 \times a + 4 \times 3b$
Taking $4$ common, we get,
Answer $\Rightarrow 4\left( {a + 3b} \right)$
Note: There is a chance that you may take 2 common but make sure you take the greater common number out which is 4 in this case.
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CBSE Class 8 Maths Chapter 2 - Linear Equations in One Variable Formulas  Linear Equations in One Variable  Linear Equations One Variable Worksheet  Solve the Pair of Linear Equation  Pair of Linear Equation in Two Variables  How to Solve Linear Differential Equation?  Linear Equations in Two Variables  Solving Linear Equations  Cross Multiplication: Solving Linear Equation Two Variables  Linear Differential Equations  