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

Toán Lớp 7: tìm x `3 . ( x – 1/2 ) – 5 . ( x + 3/5 ) = -x + 1/5 `

Toán Lớp 7: tìm x
3 . ( x – 1/2 ) – 5 . ( x + 3/5 ) = -x + 1/5

Comments ( 2 )

  1. Giải đáp+Lời giải và giải thích chi tiết:
     3 . (x-1/2) – 5 . (x+3/5) = -x+1/5
    3x-3/2-5x-5= -x+1/5
    3x-5x-x = 3/2+5+1/5
    -3x = 3+15/10+2/10
    -3x = 47/10
    x = 47/10 : -3
    x = -47/30

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