Question

How do you evaluate `−12 + 16`?

Answer 1

4

Explanation:

Note that `color(red)(16)` can and may be written as `color(red)(+12 + 4)`

So `color(green)(-12)color(red)(+16)` is the same as `ubrace(color(green)(-12)color(red)(+12))color(red)(+4)`
`color(white)("ddddddd.ddddddddddddddd") darr`
`color(white)("ddddddddddd.dddddddd.ddd")0color(white)("dd..")+4`

So `-12+16=4`