How to solve 3 1/2 - 2/3? I get getting 1 1/6 is that right

3 Answers
May 14, 2018

2 5/6

Explanation:

3 1/2 - 2/3 = ?

First, turn 3 1/2 into an improper fraction:

3 1/2 rarr 7/2

Now put that into the subtraction problem:

7/2 - 2/3

These two fractions do not have the same denominator, so they cannot be subtracted. Give them each a denominator of 6, because this is their least common multiple.

Remember to multiply the top and bottom by the same number, to keep their correct value:

7/2(3/3) rarr 21/color(orange)6

2/3(2/2) rarr 4/color(orange)6

Now put them back into the subtraction problem and subtract the numerators:

21/6 - 4/6

(21 - 4)/6

17/6 rarr 2 5/6

I went ahead and turned it back into a mixed number. The most simplified version of this subtraction problem is 2 5/6.

No, it is 2 5/6

Explanation:

You would change both fractions to have common denominators. You should get 3 3/6 and 4/6. Then, you would have to regroup since this is subtraction.

If you take away the 3 and add one whole to the 3/6, you get 2 9/6.

2 9/6 - 4/6 = 2 5/6

Hope this helps!

Sadly No. The answer is 2 5/6

Explanation:

To take away or add fractions if you are every wondering if you are right you can convert them both to top-heavy fractions.

3 1/2 = 7/2 and 2/3 = 2/3 (two thirds can't be simplified)

then you want to find a denominator which factors contain 2 and 3.

2*3=6
and convert the fractions above.

7/2 = (7*3)/(2*3) = 21/6 and 2/3 = (2*2)/(3*2)=4/6

Then you have 21/6 - 4/6 = 17/6 = 2 5/6