The answer would be E because as you may know, 10 mm is equal to 1 cm. So, 230 mm³ is equal to 23 cm³.
Turn it into math terms bit by bit. let x be "a number"
8 times a number is 8×x
increased by 9 is +9
7 times a number is 7×x
exceeds is minus
by 15 is =15
now we put it together.

solve
<span>the equation 4x = 3x ------> 4x-3x=0
x=0
</span><span>the best interpretation of this equation
</span> is the equation has one solution: x = 0