【急】七年级有理数混合运算、应用题!快帮我看看!注意:每题都要有过程!1. [-7/12+3/4-(-5/6)]*(-36)2. [2.5+(8/3+1/6-3/4)*24]/(-5)*(-1)2009次方3. (1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*(1-1/4)*(1-1/4
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![【急】七年级有理数混合运算、应用题!快帮我看看!注意:每题都要有过程!1. [-7/12+3/4-(-5/6)]*(-36)2. [2.5+(8/3+1/6-3/4)*24]/(-5)*(-1)2009次方3. (1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*(1-1/4)*(1-1/4](/uploads/image/z/1267271-71-1.jpg?t=%E3%80%90%E6%80%A5%E3%80%91%E4%B8%83%E5%B9%B4%E7%BA%A7%E6%9C%89%E7%90%86%E6%95%B0%E6%B7%B7%E5%90%88%E8%BF%90%E7%AE%97%E3%80%81%E5%BA%94%E7%94%A8%E9%A2%98%21%E5%BF%AB%E5%B8%AE%E6%88%91%E7%9C%8B%E7%9C%8B%21%E6%B3%A8%E6%84%8F%EF%BC%9A%E6%AF%8F%E9%A2%98%E9%83%BD%E8%A6%81%E6%9C%89%E8%BF%87%E7%A8%8B%211.++++%5B-7%2F12%2B3%2F4-%28-5%2F6%29%5D%2A%28-36%292.++++%5B2.5%2B%288%2F3%2B1%2F6-3%2F4%29%2A24%5D%2F%28-5%29%2A%28-1%292009%E6%AC%A1%E6%96%B93.+%EF%BC%881-1%2F2%EF%BC%89%2A%EF%BC%881%2B1%2F2%EF%BC%89%2A%EF%BC%881-1%2F3%EF%BC%89%2A%EF%BC%881%2B1%2F3%EF%BC%89%2A%EF%BC%881-1%2F4%EF%BC%89%2A%EF%BC%881-1%2F4)
【急】七年级有理数混合运算、应用题!快帮我看看!注意:每题都要有过程!1. [-7/12+3/4-(-5/6)]*(-36)2. [2.5+(8/3+1/6-3/4)*24]/(-5)*(-1)2009次方3. (1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*(1-1/4)*(1-1/4
【急】七年级有理数混合运算、应用题!快帮我看看!
注意:每题都要有过程!
1. [-7/12+3/4-(-5/6)]*(-36)
2. [2.5+(8/3+1/6-3/4)*24]/(-5)*(-1)2009次方
3. (1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*(1-1/4)*(1-1/4)*.*(1-1/99)*(1+1/99)
4. -1+[1-(1-0.6*1/3)]*[3-(-3)*(-4)]
5. (5/7)/(-12/5)-5/7*(5/12)-(5/3)/4
6. |-5-4|-(+5)*(-2)的2次方-1/(-3)
7.已知:A与B互为相反数,C与D互为倒数,且(Y+1)的2次方=0,求Y的3次方+(A+B)的2010次方-(-CD)的2011次方 的值.
【急】七年级有理数混合运算、应用题!快帮我看看!注意:每题都要有过程!1. [-7/12+3/4-(-5/6)]*(-36)2. [2.5+(8/3+1/6-3/4)*24]/(-5)*(-1)2009次方3. (1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*(1-1/4)*(1-1/4
1.[-7/12+3/4-(-5/6)]*(-36)
=(-7/12)*(-36)+(3/4)*(-36)+(-5/6)*(-36)
=21-27+30
2.[2.5+(8/3+1/6-3/4)*24]/(-5)*(-1)^2009
=[2.5+64+4-18]/5
=10.5
3.(1-1/2)*(1+1/2)*(1-1/3)*(1+1/3)*(1-1/4)*(1-1/4)*.*(1-1/99)*(1+1/99)
=额 这个呢 是不是打错了、、 我在给你打
4.-1+[1-(1-0.6*1/3)]*[3-(-3)*(-4)]
=-1+[1-(0.8)]*(3-12)
=-1+(0.2)*(-9)
=-1-1.8
=-2.8
5.(5/7)/(-12/5)-5/7*(5/12)-(5/3)/4
=-(25/84)-(25/84)-(5/12)
=-(25+25+35)/84
=-85/84(数真的好奇怪.)
6.|-5-4|-(+5)*(-2)^2-1/(-3)
=9-20+1/3
=-11+1/3
7.A=-B C=1/D Y+1=0
则 Y^3+(A+B)^2010+CD=0+0+1=1
jjj
你是要直接写答案还是要步骤