Question

I need some help please What's |5| + |–7|?

Answer 1

hello there!

`\left|5\right|+\left|-7\right|`

`rule =a,\:a\ge 0`

`|5|=5`

`\mathrm{Apply\:absolute\:rule}:\quad \left|-a\right|=a`

`\left|-7\right|=7`

`5+7=`

`12`

hope this helps you..