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

Toán Lớp 6: 3/5. (10x – 1/3) – 2(7/2 . x – 2) = 7/3. Giúp mình với ạ.

Toán Lớp 6: 3/5. (10x – 1/3) – 2(7/2 . x – 2) = 7/3. Giúp mình với ạ.

Comments ( 2 )

  1. Giải đáp:
    3/5. (10x – 1/3) – 2(7/2x – 2) = 7/3
    <=> 6x – 1/5 – 7x + 4 = 7/3
    <=> 6x – 1/5 – 7x + 4 – 7/3 = 0
    <=> -x+ 22/15 = 0
    <=> -x=-22/15
    <=> x= 22/15
    Vậy S={22/15}

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