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222-9+11+12:2*14+14 = ? ( )

Toán Lớp 6: a)217 – (x – 34) . 2 = 113 b) (x – 4) : 3 + 57 : 19 = 45 c) (3x – 40 . 2 + 17 = 93

Home/ Toán Lớp 6: a)217 – (x – 34) . 2 = 113 b) (x – 4) : 3 + 57 : 19 = 45 c) (3x – 40 . 2 + 17 = 93

Toán Lớp 6: a)217 – (x – 34) . 2 = 113 b) (x – 4) : 3 + 57 : 19 = 45 c) (3x – 40 . 2 + 17 = 93

Tháng Chín 10, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: a)217 – (x – 34) . 2 = 113
b) (x – 4) : 3 + 57 : 19 = 45
c) (3x – 40 . 2 + 17 = 93

Comments ( 2 )

  1. minhhaanh
    minhhaanh
    10 Tháng Chín, 2022 at 8:19 sáng
    Reply
    a)217 – (x – 34) . 2 = 113 
    (x-34).2=217-113
    (x-34).2=104
    x-34=104:2
    x-34=52
    x=86
    b) (x – 4) : 3 + 57 : 19 = 45
    ⇔x-4/3+3=45
    ⇔x-4+9=135
    ⇔x=130
    c) (3x – 40) . 2 + 17 = 93
    (3x-40).2=76
    3x-40=76:2
    3x-40=38
    3x=78
    x=26

  2. haianhtu97
    haianhtu97
    10 Tháng Chín, 2022 at 8:19 sáng
    Reply
    a)
    $(=) 217 – (2x+68) = 113$
    $(=) 217 – 2x + 68 = 113$
    $(=) -2x = 113-285$
    $=) x=86$
    b)
    $(=) x-4/3 + 3=45$
    $(=) x-4+9=135$
    $(=) x=135-5$
    $=)x=130$
    c)
    $3x-40.2+17=93$
    $(=) 3x-80 + 17=93$
    $(=) 3x=93+63$
    $(=) 3x=156$
    $=) x=52$

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222-9+11+12:2*14+14 = ? ( )

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