35 −3
7

Step 1

We can"t subtract 2 fractions with various denominators. Therefore you need to obtain a usual denominator. To do this, you"ll multiply the platform times every other... But the numerators need to change, too. They obtain multiplied by the other term"s denominator.

You are watching: .3*.7

So we multiply 3 by 7, and also get 21.

Then we multiply 3 by 5, and also get 15.

Next we give both terms brand-new denominators -- 5 × 7 = 35.

So now our fountain look favor this:

21
35
−15
35

Step 2

Since our platform match, we deserve to subtract the numerators.

21 − 15 = 6

So the answer is:

6
35

Step 3

Last that all, we have to simplify the fraction, if possible. Deserve to it be decreased to a simpler fraction?

To uncover out, we shot dividing that by 2...

Nope! So currently we try the next greatest prime number, 3...

Nope! So now we try the next biggest prime number, 5...

Nope! So now we try the next biggest prime number, 7...

See more: Huckleberry Finn And His Friends (1980), Revisiting Huckleberry Finn And His Friends

No good. 7 is larger than 6. So we"re done reducing.

There you have actually it! The final answer is:3
5
−3
7
=6
35

3/7 + 1/2
3/7 - 1/2
3/7 + 1/3
3/7 - 1/3
3/7 + 2/3
3/7 - 2/3
3/7 + 1/4
3/7 - 1/4
3/7 + 2/4
3/7 - 2/4
3/7 + 3/4
3/7 - 3/4
3/7 + 1/5
3/7 - 1/5
3/7 + 2/5
3/7 - 2/5
3/7 + 3/5
3/7 - 3/5
3/7 + 4/5
3/7 - 4/5
3/7 + 1/6
3/7 - 1/6
3/7 + 2/6
3/7 - 2/6
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3/7 - 3/6
3/7 + 4/6
3/7 - 4/6
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3/7 - 5/6
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3/7 - 2/7
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