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Smarticles14

  • 2 years ago

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

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

  2. Smarticles14
    • 2 years ago
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    yes

  3. cinar
    • 2 years ago
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    a=3, a=-1/2

  4. Smarticles14
    • 2 years ago
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    can you show me how you got those answers please

  5. cinar
    • 2 years ago
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    multiply 12 both side

  6. cinar
    • 2 years ago
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    take the right term to left and second term on the left to right..

  7. cinar
    • 2 years ago
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    \[\frac{ 28a }{ a+1 } - \frac{ 18a }{ a+1 }=\frac{ 15}{ a-1 }\]

  8. cinar
    • 2 years ago
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    \[\frac{ 10a }{ a+1 } =\frac{ 15}{ a-1 }\]

  9. cinar
    • 2 years ago
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    \[\frac{ 2a }{ a+1 } =\frac{ 3}{ a-1 }\]

  10. cinar
    • 2 years ago
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    \[2a(a-1)=3(a+1) \]

  11. cinar
    • 2 years ago
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    2a^2-2a=3a+3 2a^-5a-3=0 (2a+1)(a-3)=0 a=3 a=-1/2

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

  13. ConfuzzledX10
    • 2 years ago
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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?

  14. cinar
    • 2 years ago
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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..

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