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    how can i simplify 3x/2 - 4x/5 ?

    0  Views: 548 Answers: 3 Posted: 8 years ago
    Colleen

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    Below comment move to the comments section as it does not answer the question.
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    An Old Friend
    Karma: 3495

    Use your math skills, WBMS

    If you are not capable of doing so, ask your teacher for assistance, WBMA

    Asking others to do you home work will do nothing to help you learn.
    Colleen

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    Below non-answer moved
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    Don't you think it would be easier after taking L.C.M .

    3 Answers

    3x/2 - 4×/5 =15×/10 - 8×/10 = 7×/10


    10 is the lowest common multiple, but you do not substract denominators. If you did, the answer would always be zero. 

        3x            4x


       ____   -    ____ 


          2              5


    Find LCD > 10


         15x               8x


        _____   -    _______


           10                10


    Answer:    7x


                    ____


                      10


        


     


     

    3x/2-4x/5


     STEP 1    find the LCF between denominators which is 2 & 5


    and is 10 since 2 is able to go into 10 5times whiles 5 is also able to go into 10 2times and equat it to 0(zero)


    STEP 2     change it from fraction into linear form by by multiply 3x/2 by 10 vice versa


    STEP3      subtract 8x from 15x which is 7x =0


    STEP4      divide through by 7 to find x and x is zero.


    3x/2-4x/5=0


    10*3x/2-10*4x/5=0


    15x-8x=o


    7x=0


    7x/7=0/7


    x=0


     



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