\(a,\dfrac{7}{6}:x=\dfrac{1}{6}-\dfrac{4}{5}\\ \dfrac{7}{6}:x=\dfrac{5-24}{30}\\ \dfrac{7}{6}:x=-\dfrac{19}{30}\\ x=\dfrac{7}{6}:\left(-\dfrac{19}{30}\right)\\ x=-\dfrac{35}{19}\\ b,-\dfrac{47}{72}.x=1\\ x=-\dfrac{72}{47}\\\)
4/5+7/6:x=1/6
7/6:x=29/30
x=223/180
2/9-7/8.x=1
7/8.x=-7/9
x=8/9
x-2/3=x+1/4
x-2/3+2/3=x+1/4+2/3
x=x+11/12
x-x=x+11/12-x
0=11/12