Question

What is 3`7/8` `+` (`-` 4`5/8`)?

Answer 1

`3 7/8 + (-4 5/8) =1 1/4`

Explanation:

In general `a+(-b)=a-b`
So
`color(white)("XXX")3 7/8 +(-4 5/8)= 3 7/8 - 4 5/8`

#{: (,3,7/8),(-,4,5/8) :}#
`underline(color(white)("XXXXXXXX"))`
#{:(color(white)(-),1,2/8) :}#

and since `2/8=1/4` we have the answer given above.