The answer depends on the functions that you may use.
A possible solution:
cuberoot(8) + cuberoot(8) + cuberoot(8) = 2 + 2 + 2 = 6
Converting all to eights, it gives three eights minus six eights, so the answer is minus three eights.
Three of them.
Three six
There are no eights in three fourths.
3 eights would be 24. Dividing by 4, you will get 6.
Three Eights
Converting all to eights, it gives three eights minus six eights, so the answer is minus three eights.
No.
Three quarters is the simplest form for six eights. For five eights there is no simpler form.
3.75
It is: 21
Three of them.
Three six
There are no eights in three fourths.
Yes
Zero.
No, but six eights can be reduced to three fourths.