`1/5 + x = 2/3`
`x = 2/3 - 1/5`
`x = 7/15`
______________________
`-5/8 + x = 4/9`
`x = 4/9 - (-5/8)`
` x = 4/9 + 5/8`
`x = 77/72`
___________________
`1 (3/4)x + 1(1/2) = -4/5`
`7/4x + 3/2 = -4/5`
`7/4x = -4/5 - 3/2`
`7/4x = -23/10`
`x = -23/10 : 7/4`
`x = -23/10 xx 4/7`
`x = -46/35`
________________________
`1/4 + 3/4x = 3/4`
`3/4x = 3/4 - 1/4`
`3/4x = 2/4`
`3/4x = 1/2`
`x = 1/2 : 3/4`
`x = 1/2 xx 4/3`
`x = 2/3`
______________________________
`x . (1/4 + 1/5) - (1/7 + 1/8) = 0`
`x. 9/20 - 15/56 = 0`
`x . 9/20 = 0 + 15/56`
`x . 9/20 = 15/56`
`x = 15/56 : 9/20`
`x = 15/56 . 20/9`
`x = 25/42`
_____________________________
` 3/35 - (3/5 + x) = 2/7`
`3/5 + x = 3/35 - 2/7`
`3/5 + x = -1/5`
`x = -1/5 - 3/5`
`x= -4/5`
___________________________
`3/7 + 1/7 : x = 3/14`
`1/7 : x = 3/14 - 3/7`
`1/7 : x = -3/14`
`x = 1/7 : (-3/14)`
`x = 1/7 . (-14/3)`
`x = -2/3`
_________________________
`#BaoL i n h `
`8)`
`=>[(5x-1=0),(2x-1/3=0):}`
`=>[(x=1/5),(x=1/6):}`
