求20道初一上册的计算题和15道一元一次方程、一定要答案

1个回答

  • sorry呐,找不到有答案的

    我也是七上的,你可以通过验算来知道对错嘛~

    1-1/3[x-(1+x)/3]=x/2-1/2[2x-(10-7x)/3]

    1-1/3[x-1/3+x/3]=x/2-1/2[2x-10/3+7x/3]

    1-1/3[4x/3-1/3]=x/2-1/2[13x/3-10/3]

    1-4x/9-1/9=x/2-13x/6+10/6

    4x/9-x/2+13/6=10/6-4-1/9

    8x/18-9x/18+39x/18=30/18-18/18-2/18

    38x/18=18/10

    x=10/18÷38/18

    x=10/18×18/38

    x=5/19

    (5x2-2x+3)+(3x2+5x+2)

    x2y +2xy2

    –y3 +3xy2

    –4x2y-x3

    3ab-4ab+8ab-7ab+ab=______.

    7x-(5x-5y)-y=______.

    23a3bc2-15ab2c+8abc-24a3bc2-8abc=______.

    -7x2+6x+13x2-4x-5x2=______.

    2y+(-2y+5)-(3y+2)=______.

    1.3/7 × 49/9 - 4/3

    2.8/9 × 15/36 + 1/27

    3.12× 5/6 – 2/9 ×3

    4.8× 5/4 + 1/4

    5.6÷ 3/8 – 3/8 ÷6

    6.4/7 × 5/9 + 3/7 × 5/9

    7.5/2 -( 3/2 + 4/5 )

    8.7/8 + ( 1/8 + 1/9 )

    9.9 × 5/6 + 5/6

    10.3/4 × 8/9 - 1/3

    0.12χ+1.8×0.9=7.2 (9-5χ)×0.3=1.02 6.4χ-χ=28+4.4

    11.7 × 5/49 + 3/14

    12.6 ×( 1/2 + 2/3 )

    13.8 × 4/5 + 8 × 11/5

    14.31 × 5/6 – 5/6

    15.9/7 - ( 2/7 – 10/21 )

    16.5/9 × 18 – 14 × 2/7

    17.4/5 × 25/16 + 2/3 × 3/4

    18.14 × 8/7 – 5/6 × 12/15

    19.17/32 – 3/4 × 9/24

    20.3 × 2/9 + 1/3

    21.5/7 × 3/25 + 3/7

    22.3/14 ×× 2/3 + 1/6

    23.1/5 × 2/3 + 5/6

    24.9/22 + 1/11 ÷ 1/2

    25.5/3 × 11/5 + 4/3

    26.45 × 2/3 + 1/3 × 15

    27.7/19 + 12/19 × 5/6

    28.1/4 + 3/4 ÷ 2/3

    29.8/7 × 21/16 + 1/2

    30.101 × 1/5 – 1/5 × 21

    31.50+160÷40 (58+370)÷(64-45)

    32.120-144÷18+35

    33.347+45×2-4160÷52

    34(58+37)÷(64-9×5)

    35.95÷(64-45)

    36.178-145÷5×6+42 420+580-64×21÷28

    37.812-700÷(9+31×11) (136+64)×(65-345÷23)

    38.85+14×(14+208÷26)

    39.(284+16)×(512-8208÷18)

    40.120-36×4÷18+35

    41.(58+37)÷(64-9×5)

    42.(6.8-6.8×0.55)÷8.5

    43.0.12× 4.8÷0.12×4.8

    44.(3.2×1.5+2.5)÷1.6 (2)3.2×(1.5+2.5)÷1.6

    45.6-1.6÷4= 5.38+7.85-5.37=

    46.7.2÷0.8-1.2×5= 6-1.19×3-0.43=

    47.6.5×(4.8-1.2×4)= 0.68×1.9+0.32×1.9

    48.10.15-10.75×0.4-5.7

    49.5.8×(3.87-0.13)+4.2×3.74

    50.32.52-(6+9.728÷3.2)×2.5

    一元一次的方程题人教网又得下,附答案

    加油ing!