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ZoeBoi954
Lv 4
ZoeBoi954 asked in Education & ReferenceHomework Help · 8 years ago

how to find variable in a fraction?

i am very confused on how this should be done

there 2 i need help with

http://s17.postimg.org/ddf6pr60f/Untitled56.jpg

2 Answers

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  • Anthony
    Lv 7
    8 years ago
    Favorite Answer

    In general, you need to multiply by the least common denominator to get rid of the denominators.

    You need to multiply both sides by 30 to clear out the fractions:

    15x + 25 = 7 + 6x...

    then solve normally.

    For this one the LCD is 18. Multiply by 18 on both sides.

    9x -2x = 81...

    then solve normally

    ~HTH

  • Anonymous
    8 years ago

    The following video explains a similar example:

    http://www.virtualnerd.com/algebra-1/linear-equati...

    hope it helps:)

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