There are a number of expressions that are equivalent to 10a+6. To find them, you simply have to list the multiples of both 10 and 6. 10- 10 20 30 40 50 60 70 80 90 100 6- 6 12 18 24 30 36 42 48 54 60. Then, when you multiply the fraction by anything, whether this is 2, 3 or 10, you just have to do this to both parts. All of the following expressions are equivalent to 10a+6 20a+12, 30a+18, 40a+24, 50a+30, 60a+36, 70a+42, 80a+48, 90a+54, 100a+60
Or, if you're looking to simplfy, then you have to find a common multiple, which is 2. Therefore, 2 goes outside of the bracket, and you then have to divide 10 by 2 to find out what goes inside the brack. 10a/2= 5a. 6/2=3, therefore, in a bracket, it becomes 2(5a+3)
