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

Toán Lớp 6: a,2x-10=0 b,7x-28=0 c,3x-7=14 d,44-3(x+2)=2.7.

Tháng Chín 10, 2022 Toán học 2 Comments 0 views

Toán Lớp 6: a,2x-10=0 b,7x-28=0 c,3x-7=14 d,44-3(x+2)=2.7.

Comments ( 2 )

  1. lanngocha
    lanngocha
    10 Tháng Chín, 2022 at 5:50 chiều
    Reply
    a)2x-10=0
    ->2x=10
    ->x=5
    b)7x-28=0
    ->7x=28
    ->x=4
    c)3x-7=14
    ->3x=21
    ->x=7
    d)44-3(x+2)=2.7
    ->44-3(x+2)=14
    ->3(x+2)=30
    ->x+2=10
    ->x=8
     

  2. trucoanh55
    trucoanh55
    10 Tháng Chín, 2022 at 5:50 chiều
    Reply
    a.2x-10=0
    2x=0+10
    2x=10
    x=10:2
    x=5
    b.7x-28=0
    7x=0+28
    7x=28
    x=28:7
    x=4
    c.3x-7=14
    3x=14+7
    3x=21
    x=21:3
    x=7
    d.44-3.(x+2)=2.7
    44-3.(x+2)=14
    3.(x+2)=44-14
    3.(x+2)=30
    x+2=30:3
    x+2=10
    x=10-2
    x=8

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

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