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解方程:-=1
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教案备课库《2017——2018学年度上学期八①年级期中模拟数学试题》真题及答案
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解方程12﹣22x+1=31+x
解方程xx﹣1=2.
解方程3x﹣1+1=5x+2.
解方程x+1x+2=xx-1
解方程解方程+=1.
解方程3x-2=1-2x+1
解方程x2﹣1=2x+1.
解方程5-23y-1=1
解方程
解方程x﹣12﹣2x﹣1=15.
我们规定若关于x的一元一次方程ax=b的解为b﹣a则称该方程为差解方程例如2x=4的解为2且2=4﹣
解方程3y+12=25
解方程①21-x=-5x+8
解方程
解方程3x+1=7
下列解方程的过程中正确的是
x
2
=-2,解方程,得x=±
(x-2)
2
=4,解方程,得x-2=2,x=4
4(x-1)
2
=9,解方程,得4(x-1)=±3,x
1
=
,x
2
=
(2x+3)
2
=25,解方程,得2x+3=±5,x
1
=1,x
2
=-4
理解同解方程的定义再解题1同解方程的定义为如果两个方程的解相同那么这两个方程叫同解方程反之如果两个方
马虎与粗心两位同学解方程组时马虎看错了m解方程组得粗心看错了n解方程组得试求:1常数mn的值;2原方
解方程x+1-2x-1=1-3x
某同学在解方程-1去分母时方程右边的-1没有乘以3因而求得方程的解为x=2试求a的值并正确的解方程.
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