Practise the method.Example 19x+3=312. Find x.Show worked answerAnswer: 3Since 9=32, match exponents: 2(x+3)=12.Divide by 2 and subtract 3x=3.Example 2A population is multiplied by the same positive factor each hour. It is 24 after 1 hour and 216 after 3 hours. What is the hourly multiplier?Show worked answerAnswer: 3Across two hours the multiplier is 24216=9.The positive hourly multiplier is 3.Example 34x+1=26. Find x.Show worked answerAnswer: 2Since 4=22, match exponents: 2(x+1)=6.Divide by 2 and subtract 1x=2.