a)\(x=\dfrac{11}{4}:\dfrac{3}{4}=\dfrac{11}{3}\)
b)\(x=\dfrac{4}{15}-\dfrac{18}{15}==-\dfrac{14}{15}\)
c)\(x=-21-8=-29\)
d)\(x=\left(\dfrac{1}{2}+\dfrac{1}{7}\right):\dfrac{3}{5}=\dfrac{9}{14}:\dfrac{3}{5}=\dfrac{15}{14}\)
` x . 3/4 = 11/4`
`x = 11/4 : 3/4`
`x = 11/3`
`18/15 + x = 4/15`
` x = 4/15 - 18/15`
`x = -14/15`
`x +8 = -21`
` x = -21 - 8`
`x = -29`
`3/5x - 1/2 = 1/7`
`3/5x = 1/7 + 1/2`
`3/5x = 9/14`
`x = 9/14 : 3/5`
`x = 15/14`
