The answer is 2x^3
Because there are two of the same squares and the volume of a square is x^3
I do suppose that you refer to adding these quantities:
6/1 + 21 = 6 + 21 = 27
<span>and
6/10 + 21
</span>= 3/5 + 21
= 3/5 + 105/5
<span>= 108/5</span>
3 minutes
750 x 4 = 3000
there are 1000 mL in each liter.