Question

Describe the error in the work shown belowFind an expression equivalent to 18+ 30.Factors of 18: 1.2.3.6. 9. 18Factors of 30: 1, 2, 3, 5, 6, 10, 15, 3018 + 30 = 6(3 + 10)

Answer 1

The error in the work below is in the simplification, because 30/6 = 5 and not 10.

The equivalent expression is 18+30 = 6(3+5).

Explanation:

To solve this question, we have to find the factors of 18 and 30.

Factors of 18: {1,2,3,6,9,18}

Factors of 30: {1,2,3,5,6,10,15,30}

Greatest common factor between 18 and 30 is 6.

This means that the expression can be written as:

`18+30=6((18)/(6)+(30)/(6))=6(3+5)`

The error in the work below is in the simplification, because 30/6 = 5 and not 10.

The equivalent expression is 18+30 = 6(3+5).