Factor out the greatest common factor from 12x + 18. What remains inside the parentheses after factoring out 6?

Correct answer to question 131 (Mathematics Knowledge): 2x + 3

Method

Both 12x and 18 are divisible by 6, the greatest common factor. Dividing each term by 6 gives 2x + 3, so the expression factors as 6(2x + 3).