`a )``2/3.x-1/2=1/10`
`2/3.x = 1/10 + 1/2`
`2/3.x = 1/10 + 5/10`
`2/3.x = 6/10 = 3/5`
`2/3.x = 3/5`
` x = 3/5 : 2/3`
` x = 3/5 . 3/2`
` x = 9/10`
`b )``(-2)/3.x+1/5=3/10`
`(-2)/3.x = 3/10 - 1/5`
`(-2)/3.x = 3/10 - 2/10`
`(-2)/3.x = 1/10`
` x = 1/10 : ( -2 )/3`
` x = 1/10 . 3/( -2 )`
` x = 3/-20`
`c )``(4/5.x-5):2/3=-5`
`(4/5.x-5) = -5 . 2/3`
` 4/5.x-5 = (-10 )/3`
` 4/5.x = (-10 )/3 + 5`
` 4/5.x = (-10 )/3 + 5/1`
` 4/5.x = ( -10 )/3 + 15/3`
` 4/5.x = 5/3`
` x = 5/3 : 4/5`
` x = 5/3 . 5/4`
` x = 25/12`
