1. The problem statement, all variables and given/known data Solve each of the following equations. This is part of a practice mock test I have for an exam so I have all the answers but they aren't lining up somewhere. I got a) right but b) and c) wrong 2. Relevant equations a)4x+6=18 b)5x+7=7x-9 c)1/x+2 = 7 (giving answer rounded to 4 decimal places) 3. The attempt at a solution The first was easy, the rest though :/ a: 4x+6=18 4x=12 x=3 b: 5x+7 = 7x-9 -2X = -2 X= 4 c: 1/x+2 = 7 x+2 = (7*1) x=5 the answer they got was -1.8571... Please help guys this basic stuff is killing me! I can do that advanced stuff no problem (this is for a degree in Engineering) but this basic stuff is a nightmare!!