Lm cách đơn giản thôi ạ

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Lm cách đơn giản thôi ạ
lm-cach-don-gian-thoi-a

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Tài Đức 3 years 2021-05-22T02:41:24+00:00 2 Answers 11 views 0

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  1. niczorrrr
    0
    2021-05-22T02:42:42+00:00
    Reply

    a) x + 7/3 = 4/3                            

    => x=4/3 – 7/3

    => x = -3/3

    => x = -1

    Vậy x = -1  

    b) 5/-7  – x = -3/14

    => -5/7 – x = -3/14

    =>  x = -5/7 – ( -3/14 )

    => x = -5/7 + 3/14

    => x = -10/14 + 3/14 

    => x = -7/14

    => x = -1/2

    Vậy x = -1/2

    c) x – 2/-9 = 4/3

    => x – ( -2/9 ) = 4/3 

    => x + 2/9 = 4/3

    => x = 4/3 – 2/9

    => x = 12/9 – 2/9

    => x = 10/9

    Vậy x = 10/0

    d) 3/7 – 1/2 . x = 5/3

    => 1/2 . x = 3/7 – 5/3

    => 1/2 . x = -26/21

    => x = -26/21 :  1/2 

    => x = -26/21 . 2 

    => x = -52/21

    Vậy x = -52/21

    e) 3/4 . x +1/2 = -3/5

    => 3/4 . x = -3/5 -1/2

    => 3/4 . x = -11/10

    => x = -11/10 : 3/4

    => x= -11/10 . 4/3

    => x = -22/15

    Vậy x = -22/15

    j) 1/2 + 3/4 : x = -3/5

    => 3/4 : x = -3/5 – 1/2

    => 3/4 : x = -11/10

    => x = 3/4 : ( -11/10 )

    => x = -15/22

    Vậy x = -15/22

    g) x : 2/7 – 1/5 = 7/15

    => x : 2/7 = 7/15 + 1/15

    => x : 2/7 = 8/15

    => x = 8/15 . 2/7

    => x = 16/105

    Vậy x = 16/105

     

  2. Neala
    0
    2021-05-22T02:43:19+00:00
    Reply

    $#Đáp án + Giải thích các bước giải:$

    `a)`

    `x+7/3=4/3`

    `→x=4/3-7/3`

    `→x= -3/3`

    `→x=-1`

    Vậy `x=-1`

    ————————————

    `b)`

    `5/-7 -x=(-3)/14`

    `→(-5)/7-x=(-3)/14`

    `→x= (-5)/7-(-3)/14`

    `→x=-1/2`

    Vậy `x=-1/2`

    ————————————

    `c)`

    `x-2/(-9)=4/3`

    `→x+2/9=4/3`

    `→x=4/3-2/9`

    `→x=10/9`

    Vậy `x=10/9`

    —————————————

    `d)`

    `3/7-1/2x=5/3`

    `→1/2x=3/7-5/3`

    `→1/2x=-26/21`

    `→x=-26/21÷1/2`

    `→x=-52/21`

    Vậy `x=-52/21`

    —————————————-

    `e)`

    `3/4x+1/2=(-3)/5`

    `→3/4x=(-3)/5-1/2`

    `→3/4x=-11/10`

    `→x=-11/10÷3/4`

    `→x=-22/15`

    Vậy `x=-22/15`

    —————————————-

    `f)`

    `1/2+3/4÷x=-3/5`

    `→3/4÷x=-3/5-1/2`

    `→3/4÷x=-11/10`

    `→x=3/4÷ -11/10`

    `→x=-15/22`

    Vậy `x=-15/22`

    —————————————–

    `g)`

    `x÷2/7-1/5=7/15`

    `→x÷2/7=7/15+1/5`

    `→x÷2/7=2/3`

    `→x=2/3 . 2/7`

    `→x=4/21`

    Vậy `x=4/21`

    —————————————–

    $#Cam$

    $#XIN HAY NHẤT CHO NHÓM AK$

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