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

Toán Lớp 6: B=(67/111+2/33-15/117)x(1/3-1/4-1/2)x2018 C=1+2+3+-..+8+9/11+12+13+-+24+25 G=19991999×1998-19981998×1999

Toán Lớp 6: B=(67/111+2/33-15/117)x(1/3-1/4-1/2)x2018
C=1+2+3+……+8+9/11+12+13+….+24+25
G=19991999×1998-19981998×1999

Comments ( 2 )

  1. B = ( 67/111 + 2/33 – 15/117 ) xx ( 1/3 – 1/4 – 1/2 ) xx 2018
    B = 2836/5291 xx ( 4/12 – 3/12 – 6/12 ) x 2018
    B = 2836/5291 xx ( – 5 )/12 xx 2018
    B = ( – 3545 )/15873 xx 2018
    B = ( – 7513810 )/15873
    _______________________________________________
    C = ( 1 + 2 + 3 + …. + 8 + 9 )/( 11 + 12 + 13 + …. + 24 + 25 )
    C = ( ( 9 + 1 ) . 9 : 2 )/( ( 25 + 11 ) . 15 : 2 )
    C = ( 10 . 9 : 2 )/( 36 . 15 : 2 )
    C = ( 90 : 2 )/( 540 : 2 )
    C = 45/270 = 1/6
    ______________________________________________
    G = 19991999 xx 1998 – 19981998 xx 1999
    G = 1999 xx 10 001 xx 1998 – 1998 xx 10 0001 xx 1999
    G = 0 ( Do cả 2 vế giống nhau nên hiệu là 0 )

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