Question

What should be add to 7 3/5 to get 18

Answer 1

`10(2)/(5)`

Explanation:

`7(3)/(5) + x = 18\\`

transformation :
`7(3)/(5) = ((5*7) + 3)/(5) = (38)/(5)`

`(38)/(5) + x = 18\\\\x = 18 - (38)/(5) = ((5*18) - 38)/(5) = (52)/(5)`

`(52)/(5) = 10(2)/(5)`

Answer 2

`10(2)/(5)`

Explanation:

What should be add to
`7(3)/(5)` to get
`18` ?

`18-7(3)/(5)=\\ \\=17(5)/(5)-7(3)/(5)\\\\\\=(17-7)+((5)/(5)- (3)/(5))\\ \\=10+(2)/(5)\\ \\=10(2)/(5)`