1. algebra help

if 1/5 + 1/6 + 1/7 > 1/5 + 1/6 + 1/y then y could be which of the following?

(A) 6 (B) 7 (C) 8 (D) 9 (E) 10

2. Originally Posted by sri340
if 1/5 + 1/6 + 1/7 > 1/5 + 1/6 + 1/y then y could be which of the following?

(A) 6 (B) 7 (C) 8 (D) 9 (E) 10

Take 1/5 and 1/6 from both sides

1/7 > 1/y

Assume that y > 0 so we don't have a sign change and cross multiply

y > 7