Practise the method.Example 1Expand 4(x+3).Show worked answerAnswer: 4x+12Multiply each term inside the bracket by 4.Example 2Factorise 2x+6 using the greatest common numerical factor.Show worked answerAnswer: 2(x+3)The greatest common numerical factor is 2; dividing each term by it gives x+3.Example 3Make x the subject of y=6x+6.Show worked answerAnswer: x=6y−6Subtract 6 from both sides, then divide by 6.