Question 487761
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What number must be added to the numerator of 3/10 to produce the fraction 4/5?
Thank you!
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                The answer in the post by @Theo is incorrect.



The correct answer is the number '5', which should be added to the numerator of 3/10 to produce the fraction 4/5.


            {{{(3+5)/10}}} = {{{8/10}}} = {{{4/5}}}.



Solved correctly.