(3)/(28)+(1)/(21) - add fractions

(3)/(28)+(1)/(21) - step by step solution for the given fractions. Add fractions, full explanation.

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    Solution for the given fractions

    $ \frac{3}{28 }+\frac{ 1}{21 }=? $

    The common denominator of the two fractions is: 84

    $ \frac{3}{28 }= \frac{(3*3)}{(3*28)} =\frac{ 9}{84} $

    $ \frac{1}{21 }= \frac{(1*4)}{(4*21)} =\frac{ 4}{84} $

    Fractions adjusted to a common denominator

    $ \frac{3}{28 }+\frac{ 1}{21 }=\frac{ 9}{84 }+\frac{ 4}{84} $

    $ \frac{9}{84 }+\frac{ 4}{84 }= \frac{(4+9)}{84} $

    $ \frac{(4+9)}{84 }=\frac{ 13}{84} $

    $ $

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