Anonymous

n + (n + 7) + 2(n + 7) = 108 n + n + 7 + 2n + 14 = 108 4n + 21 = 108 4n = 87 n = 21.75.

Anonymous

n+(n+7)+2(n+7) = 108, add 7 to both sides (n+7)+(n+7)+2(n+7) = 115, simplify 4(n+7) = 115, divide by 4 n+7 = 115/4 = 28 3/4, subtract 7 n = 21 3/4

Anonymous

n + (n + 7) + 2(n + 7) = 108. n + 3(n + 7) = 108. n + 3n + 21 = 108. 4n + 21 = 108. 4n = 108 - 21. 4n = 87. ===> n = 87/4 = 21 3/4 (ANSWER).

Anonymous

n + n + 7 + 2n + 14 = 108 4n = 87 n = 87/4

Anonymous

n + (n + 7) + 2(n + 7) = 108 4n = 87 n = 21 3/4

Anonymous

It is the same as 4n+21 = 108 and 4n = 108-21 which is 87 and so n = 87/4 which is 21.75

Anonymous

n + (n+7) + 2(n+7) is the same as n + n + 7 + 2n + 14. That can be written as 4n + 21. So we have 4n + 21 = 108. Just subtract 21 from both sides. Then divide both sides by 4.