how to do +,-,*,/ with fractions
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Lets take example:
2/3 and 8/7
Addition:
2/3 + 8/7
Take lcm of denominators rhat is 3 and 7
The denominator of those both us 21.
Make both denominator as 21.
2*7/3*7
And
8*3/7*3
Addition now is
14/21 plus 24/21 add the neumirator and let the denominator be 21.
Which is 38/21
Subtraction is same but at last you do 14-24 instead.
Multiplication:
2/3*8/7
=2*8/3*7
=16/21
Division :
2/3 / 8/7
=
Take reciprocal of 8/7 and multiply
= 2/3*7/8
=14/24
Hope you know how this came
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