Simple Fraction Addition & Subtraction

(Click on a card to see the solution)

`1/5 + 1/7 =`

`(7+5)/(5 xx 7) = `
`12/35`

`1/3 + 1/5 =`

`(5+3)/(3 xx 5)`
`=8/15`

`1/2 - 1/3 =`

`(3-2)/(2 xx 3)`
`=1/6`

`1/4 - 1/9 =`

`(9-4)/(4 xx 9)`
`=5/36`

`1/9 + 1/7 =`

`(7 + 9)/(9 xx 7)`
`=16/63`

`1/8 + 1/4 =`

`(4+8)/(8 xx 4)`
`=12/32`

`1/5 - 1/7 =`

`(7-5)/(5 xx 7)`
`=2/35`

`1/3 - 1/8 =`

`(8-3)/(3 xx 8)`
`=5/24`