Twice the difference between a number, n, and forty-two is three times the number.

Twice: Multiplied by 2

Difference between a number, n, and forty-two: N minus 42

is: Equal sign (=)

three times the number: 3 multipled by n

2 * (n-42) = 3n

2n - 84 = 3n Distribute the 2 to the n and -42

**n = -84**Subtract 2n from both sides, and this will be your answer.