Bài 9 : Tìm số nguyên x a) ( 215+x ) – 215 = 0 b) (-444)-(x-444)=0 c) 123-(132-x)=0 d) 85-(85+x)=0

Question

Bài 9 : Tìm số nguyên x
a) ( 215+x ) – 215 = 0
b) (-444)-(x-444)=0
c) 123-(132-x)=0
d) 85-(85+x)=0

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Audrey 3 tuần 2021-11-21T04:19:38+00:00 2 Answers 16 views 0

Answers ( )

    0
    2021-11-21T04:20:52+00:00

    Đáp án:

     

    Giải thích các bước giải:

    a) (215+x)-215=0

         215+x=215

       <=> x=0

    b) (-444)-(x-444)=0

          x-444=444

       <=> x=0

    c) 123-(132-x)=0

      132-x=123

    <=> x=9

    d) 85-(85+x)=0

         85+x=85

    <=> x=0

       

     

    0
    2021-11-21T04:21:22+00:00

    a, $(215+x)-215=0$

    $⇔215+x-215=0$

    $⇔x=0$

    b,$-444-(x-444)=0$

    $⇔-444-x+444=0$

    $⇔x=0$

    c,$123-(132-x)=0$

    $⇔123-132+x=0$

    $⇔x=9$

    d,$85-(85+x)=0$

    $⇔85-85-x=0$

    $⇔x=0$

     

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