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Summer Clouds moderators

25/08/2017 at 15:54
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Solve the equation \(0,6\left(x+10\right)+0,4\left(11x-5\right)=0,7x+25,5\)




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  • ...
    Kaya Renger Coordinator 25/08/2017 at 15:59

    \(0,6\left(x+10\right)+0,4\left(11x-5\right)=0,7x+25,5\)

    \(0,6.x+6+0,4.11x-2=0,7x+25,5\)

    \(\left(0,6x+4,4x\right)-0,7x=25,5-4\)

    \(\left(0,6+4,4-0,7\right)x=21,5\)

    \(4,3x=21,5\)

    \(\Rightarrow x=5\)

  • ...
    Luffy xyz 123 25/08/2017 at 19:22

    0,6(x + 10 ) + 0,4(11x - 5 ) = 0,7x + 25,5

    0,6 . x + 0,6 x 10 + 0,4.11 - 42= 0,7x + 25,5

    ( 0,6x + 4,4x ) - 0,7x = 25,5 - 4

    5x - 0,7x = 21,5

    4,3x = 21,5

    => x = 21,5 : 4,3 = 5


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