Answer:
A. 2¾
Explanation:
The person needs the difference. This is a subtraction problem.
3 1/2 - 3/4 =
3/4 is just a fraction, but you can think of 3/4 as a mixed numeral by writing 3/4 as 0 3/4. The whole part is 0 and the fractional part is 3/4.
= 3 1/2 - 0 3/4
Now we are subtracting two mixed numerals. You need to subtract the whole part, 0, from the whole part, 3, and the fractional part, 3/4, from the fractional part, 1/2.
For the fractional parts, we need a common denominator of 4.
= 3 2/4 - 0 3/4
Now we have both fractions with a common denominator of 4, but since we cannot subtract 3/4 from 2/4, we borrow 1 from 3 as 4/4.
3 goes down 1 to 2, and the 1 which is borrowed as 4/4 is added to the 2/4 to give you 2 6/4. 2 6/4 has the same value as 3 2/4. Now we have:
= 2 6/4 - 0 3/4
We subtract 0 from 2, and we subtract 3/4 from 6/4.
= 2 3/4
Answer: 2 3/4