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

Toán Lớp 7: Tim x 1/2+1/3-4/6+x b. 1+2[7-9]

Toán Lớp 7: Tim x
1/2+1/3-4/6+x
b. 1+2[7-9]

Comments ( 2 )

  1. y10000
    a )
    1\2 + 1\3 – 4\6 + x = 0
    <=> 1\6 + x = 0
    <=> x = -1/6
    b )
    1+ 2 . [ 7 – 9 ]
    = 1 + 2 . ( -2 )
    = 1 + ( -4 )
    = – 3

  2. a) 1/2+1/3-4/6+x=0
     3/6+2/6-4/6+x=0
    1/6+x=0
    ⇒ x=-1/6
    $\text{Đầu bài của câu b có vấn đề ; tus sửa đi rồi mình làm tiếp cho}$
    $\text{Chúc bn hok tốt}$
     

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