Question

`18(1)/(5) -(-22(2)/(5) )-(-40(1)/(5) )?\\`

Answer 1

`=80(4)/(5)`

Explanation:

`18(1)/(5)-\left(-22(2)/(5)\right)-\left(-40(1)/(5)\right)`

`=(91)/(5)-\left(-22(2)/(5)\right)-\left(-40(1)/(5)\right)`

`=(91)/(5)-\left(-(112)/(5)\right)-\left(-40(1)/(5)\right)`

`=(91)/(5)-\left(-(112)/(5)\right)-\left(-(201)/(5)\right)`

`=(91)/(5)+(112)/(5)+(201)/(5)`

`\mathrm{Apply\:the\:fraction\:rule}:\quad (a)/(c)+(b)/(c)=(a+b)/(c)`

`=(91+112+201)/(5)`

`\mathrm{Add\:the\:numbers:}\:91+112+201=404`

`=(404)/(5)`

`=80(4)/(5)`