Question

2/5-1/4+1/7 find the value of
​

Answer 1

Answer:

41/140

Step-by-step explanation:

To add the given fraction, you need to do a step that we don't do while adding whole and natural numbers i.e. you need to make the denominators equal.

Why can you simply add the fractions?

The simple answer is, b'cause the denominators aren't equal and they can't be just added up, denominators need to be made equal.

So, the first step you shall do is to take the L.C.M. of the denominators i.e. take the L.C.M. of 5, 4 and 7.

Which is 140.

Now, take the common denominator as 140.

Now, divide 140 by 5 you'll get 28; multiply 28 by 2.

Now divide 140 by 4 you'll get 35; multiply 35 by 1.

Now divide 140 by 7 you'll get 20; multiply 20 by 1.

Now, as the denominatpr is equal, further opperation can be done easily as given in the attachment.