Question

What is 1 2/7- 3/4 equal to

Answer 1

9514 1404 393

Answer:

15/28

Explanation:

We can rearrange the problem a bit and make it a little simpler.

1 2/7 - 3/4 = (1 -3/4) + 2/7 = 1/4 + 2/7

= (7+4·2)/(4·7) = 15/28

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The sum of fractions can always be found by ...

`(a)/(b)+(c)/(d)=(ad+bc)/(bd)\\\\(1)/(4)+(2)/(7)=(1\cdot7+4\cdot2)/(4\cdot7)=(7+8)/(28)=(15)/(28)`