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Girly17

  • 2 years ago

Find the least common denominator. Then combine. 2/9 - 2/15=

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  1. amistre64
    • 2 years ago
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    spose we set it equal to some arbitrary "n"umber

  2. Girly17
    • 2 years ago
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    can you work it out for me please because i have to show my work and i really dont get it, thankyou

  3. amistre64
    • 2 years ago
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    \[\frac{2}{9}-\frac{2}{15}=N\] now lets just start clearing the fractions from low to high; multiply thru by 9 \[\frac{2(9)}{9}-\frac{2(9)}{15}=(9)N\] \[2-\frac{2(3)}{5}=9N\] now multiply thru by 5 \[2(5)-\frac{2(3)(5)}{5}=9(5)N\] \[2(5)-2(3)=9(5)N\] then solve for N

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