Question

If n represents a number, then write an expression for three times the difference of the number and six increased by four time the number.

Answer 1

3(n-6)+4

difference of n and 6=n-6

multiply by three=3(n-6)

add 4=3(n-6)+4

n-6 is in parenthesis because the difference of n and 6 comes before multiplying by 3.