What is the answer?

3-2/3-7/9

3 Answers

14/9=1 5/9

Explanation:

To simplify this, we need to have denominators that are all the same (if you think about it in terms of pizza slices, a pizza slice from a pizza sliced into 9 pieces is far smaller than a slice from a pizza sliced into 3 slices). We can do that by using creative forms of the number 1:

3(1)-2/3(1)-7/9(1)

3(9/9)-2/3(3/3)-7/9(1/1)

27/9-6/9-7/9

And now we work this from left to right:

21/9-7/9

14/9=1 5/9

Jun 13, 2018

14/9

Explanation:

.

We need to do something that will give all three terms the same denominator. This common denominator has to be divisible by all three original denominators.

Because 9 is divisible by both 3 and 1, we will make our common denominator 9. So, we will multiply the top and the bottom of each term by whatever will give us 9 at the bottom of all three terms.

Remember that 3=(3)/1

3-2/3-7/9=3/1-2/3-7/9=(3(9))/9-(2(3))/(3(3))-7/9=27/9-6/9-7/9=(27-6-7)/9=(27-13)/9=14/9

Jun 13, 2018

14/9

Explanation:

So we have

3-2/3-7/9

So to subtract or add two fractions, they have to have the denominator. In order to do that, find their least common multiple. Since 3 is a multiple of 9, we can do 3*(-2)/3 to get the same denominator and subtract

3*(-2)/3=-6/9

However, we also have the whole number 3. This, as a fraction is 3/1. Multiply by 9 and we have 27/9. Now we can set up the whole equation:

27/9-6/9-7/9

Because -6/9 is a negative number, it cannot technically be subtracted. -7/9 and -6/9 can be added together but is still negative.

And now we have

27/9-13/9=14/9

Hopefully this helped and made sense!