Tim so nguyen x 1)7-x=5-(-14) 2)-18+x=-8+13 3)x+32=84+(-46) 4)484+x=-632+(-548)

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1. 1) 7 – x = 5 – (-14)

   => 7 – x = 5 + 14

   => -x = 5 + 14 – 7

   => -x = 12

   => x = -12

   2) -18 + x = -8 + 13

   => x = -8 + 13 + 18

   => x = 23

   3) x + 32 = 84 + (-46)

   => x + 32 = 84 – 46

   => x = 84 – 46 – 32 

   => x = 6

   4) 484 + x = -632 + (-548)

   => x = -632 + (-548) + (-484)

   => x = -1664

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2. $\text{ 1) 7-x=5 – (-14) }$

   $\text{   7-x = -( 14 – 5 ) }$

   $\text{    7-x = – 9 }$

   $\text{       x = (-9) – 7 }$

   $\text{       x = -16 }$

   $\text{  Vậy x = – 16 }$

   $\text{  2) }$\text{ –18+x=-8+13  }$

   $\text{     x= -8 + 13 + 18  }$

   $\text{  Vậy x= 23  }$

   $\text{  3) x+ 32= 84+ (-46)  }$

   $\text{   x +32= 38 }$

   $\text{        x  = 38 – 32 }$

   $\text{       x  =  6 }$

   $\text{  4) 484+x=-632+(-548)  }$

   $\text{     484+x= -1180 }$

   $\text{             x= (-1180) – 484  }$

   $\text{             x= -1664  }$

   $\text{ Vậy x= -1664 }$

   $\text{ Chíp:33 }$

   $\text{ Chúc bạn học tốt !!!:33 }$

    

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