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时间:2019-07-04
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1、…………○…………密…………封…………线………○内…………不…………要…………答…………题…………○…………△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△初一下册数学解方程练习1、依据下列解
2、方程的过程,请在前面的括号内填写变形步骤,在后面的括号内填写变形依据.解:原方程可变形为( _________ )去分母,得3(3x+5)=2(2x﹣1).( _________ )去括号,得9x+15=4x﹣2.( _________ )( _________ ),得9x﹣4x=﹣15﹣2.( _________ )合并,得5x=﹣17.( _________ )( _________ ),得x=.( _________ )2、5(x﹣5)+2x=﹣43、6(x﹣5)=﹣24 4、5(x+8)﹣5=6(2x﹣7)5、6、7、=﹣18、﹣=19、1﹣3(8﹣x)=﹣2(15﹣2x)
3、10、11、初一年级数学学科练习题共3页第3页…………○…………密…………封…………线………○内…………不…………要…………答…………题…………○…………△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△
4、△△△△△12、5(x+8)=6(2x﹣7)+513、14、4(2x+3)=8(1﹣x)﹣5(x﹣2)15、16、17、18、=﹣219、﹣2=20、12(2﹣3x)=4x+421、﹣1=初一年级数学学科练习题共3页第3页…………○…………密…………封…………线………○内…………不…………要…………答…………题…………○…………△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△
5、△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△△22、23、24、2﹣=x﹣25、﹣1=26、27、设,,当x为何值时,y1、y2互为相反数.28、x为何值时,代数式的值等于3.初一年级数学学科练习题共3页第3页
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