I like to reduce everything by half if I don't already know the answer.

It just so happens that is the reduced fraction.
All I did was halve 18, which is 9, and halve 34, which is 17.
Well you could multiply 432 by 0.75, or you can divide it by 4 and then multiply it by 3. Either way your answer is 324.
The multiplicative inverse of -1/3 is -3.
Answer:
Right
Step-by-step explanation:
20 and 21 is your answer
20 + 21 = 41
hope this helps