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3 years ago

12

How to subtract a negative fraction from a positive fraction?

1 answer:

ikadub [295]3 years ago

8 0

Let's take an example to illustrate this case:

<span>positive fraction = 2/7
</span>
<span>negative fraction = - 3/5

Now we need to subtract </span><span>- 3/5 from 2/7

Right?

2/7 - (-3/5) = 2/7 + 3/5

here we need to unify the denominators as follows:

the lowest common factor between 7 and 5 is 35
2/7 = 10/35
3/5 = 21/35

Now back to </span><span>2/7 + 3/5:

</span><span><span>2/7 + 3/5 = 10/35 + 21/35 = (10+21)/35 = 31/35

That's it

Hope that helps you</span>
</span>

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2 years ago

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marysya [2.9K]

Answer:

1) ΔACD is a right triangle at C

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⇔ AB² = 7.9² + 9.7² = 156.5

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3 years ago

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Answer:

Step-by-step explanation:

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