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Smarticles14 Group Title

solve the equation (7a/3a+3)-(5/4a-4)=(3a/2a+2)

  • one year ago
  • one year ago

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  1. xon1300 Group Title
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    Is this the equation? \[\frac{ 7a }{ 3a+3 } - \frac{ 5 }{ 4a-4 } = \frac{ 3a }{ 2a+2 }\]

    • one year ago
  2. Smarticles14 Group Title
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    yes

    • one year ago
  3. cinar Group Title
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    a=3, a=-1/2

    • one year ago
  4. Smarticles14 Group Title
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    can you show me how you got those answers please

    • one year ago
  5. cinar Group Title
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    multiply 12 both side

    • one year ago
  6. cinar Group Title
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    take the right term to left and second term on the left to right..

    • one year ago
  7. cinar Group Title
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    \[\frac{ 28a }{ a+1 } - \frac{ 18a }{ a+1 }=\frac{ 15}{ a-1 }\]

    • one year ago
  8. cinar Group Title
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    \[\frac{ 10a }{ a+1 } =\frac{ 15}{ a-1 }\]

    • one year ago
  9. cinar Group Title
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    \[\frac{ 2a }{ a+1 } =\frac{ 3}{ a-1 }\]

    • one year ago
  10. cinar Group Title
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    \[2a(a-1)=3(a+1) \]

    • one year ago
  11. cinar Group Title
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    2a^2-2a=3a+3 2a^-5a-3=0 (2a+1)(a-3)=0 a=3 a=-1/2

    • one year ago
  12. Smarticles14 Group Title
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    ok thank you i got it can you help me with this one 1=(1/1-a)+(a/a-1)

    • one year ago
  13. ConfuzzledX10 Group Title
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    i don't understand why you times everything by 12? I get that it's the least common denominator so are you trying to find the least common denominator of the numbers that have a variable after them or what?

    • one year ago
  14. cinar Group Title
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    yes 12 is the lcm of 2,3,4. you don't need to do that, but this is one way to solve it and it makes our job easier, at least for me..

    • one year ago
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