\(a,x=\dfrac{6}{5}-\dfrac{5}{6}\\ x=\dfrac{11}{30}\\ b,x=\dfrac{13}{4}-\dfrac{3}{5}\\ x=\dfrac{53}{20}\\ c,x=\dfrac{2}{3}-\dfrac{8}{21}\\ x=\dfrac{2}{7}\)
a: x=6/5-5/6=36/30-25/30=11/30
b: x=13/4-3/5=65/20-12/20=53/20
c: x=2/3-8/21=14/21-8/21=6/21=2/7
a)
x= 6/5-5/6
x= 11/30
b)
x= 13/4-3/5
x= 53/20
c)
x= 2/3-8/21
x=2/7