Here's the question you clicked on:
Abid3127
solving linear equation -7/8=-5/6z
multiply by the inverse, so timesit by -6/5
divide both sides by - 5/6
so z is 21/20 when simplified
i know how to do it, my problem is it dont match the answer
well what were you getting as an answer?
http://openstudy.com/study#/updates/510b33dee4b09cf125bbf660
Cross multiply -7 with 6z then do the same thing with -5 x 8 You'll get -42z = -40 then you move -42 to the denominator Z= -40/-42 - /- becomes + Z=20/21