1. Yx3+Yx8-Yx6+ 10 x Y +720=1260 2. 12x(2xY-4)+(7-3xY)x5+6x(8+10xY)=35708 3. 8x(Y+3)+6x(8-y)+(5xY-2)x7=3684| 4. 8x(2xY+9)+(12-Y)x3+4x(2xY-3-6xY)=18 5.

0 bình luận về “1. Yx3+Yx8-Yx6+ 10 x Y +720=1260 2. 12x(2xY-4)+(7-3xY)x5+6x(8+10xY)=35708 3. 8x(Y+3)+6x(8-y)+(5xY-2)x7=3684| 4. 8x(2xY+9)+(12-Y)x3+4x(2xY-3-6xY)=18 5.”

1. 1)Yx3+Yx8-Yx6+10xy+720=1260

   3Y+8Y-6Y+10Y+720=1260

   11Y-6Y+10Y+720=1260

   5Y+10Y+720=1260

   15Y+720=1260

   15Y=1260-720

   15Y=540

   Y=540:15

   Y=36

   3. 8x(Y+3)+6x(8-y)+(5xY-2)x7=3684

   8y+24+48-6y+35y-14=3684

   8y-6y+35y+24+48-14=3684

   2y+35y+24+48-14=3684

   37y+24+48-14=3684

   37y+72-14=3684

   37y+58=3684

   37y=3684-58

   37y=3626

   y=3626:37

   y=98

   5. 2x(4xY-8)- 6x(Y+3)=35712

   8y-16-6y+18=35712

   2y-16+18=35712

   2y-2=35712

   2y=35712+2

   2y=35714

   y=35714:2

   y=17 857

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2. `Yx3+Yx8-Yx6+10xy+720=1260`

   `3Y+8Y-6Y+10Y+720=1260`

   `11Y-6Y+10Y+720=1260`

   `5Y+10Y+720=1260`

   `15Y+720=1260`

   `15Y=540`

   `Y=540:15`

   `Y=36`

   `8x(Y+3)+6x(8-y)+(5xY-2)x7=3684`

   `8y+24+48-6y+35y-14=3684`

   `8y-6y+35y+24+48-14=3684`

   `2y+35y+24+48-14=3684`

   `37y+24+48-14=3684`

   `37y+72-14=3684`

   `37y+58=3684`

   `37y=3684-58`

   `37y=3626`

   `y=3626:37`

   `y=98`

   `2x(4xY-8)- 6x(Y+3)=35712`

   `8y-16-6y+18=35712`

   `2y-16+18=35712`

   `2y-2=35712`

   `2y=35712+2`

   `2y=35714`

   `y=35714:2`

   `y=17 857`

   $#JAW#$

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