初一下册数学解方程练习

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2、初一下册数学解方程练习1、依据下列解方程的过程，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﹣

3、7）5、6、7、=﹣18、﹣=19、1﹣3（8﹣x）=﹣2（15﹣2x）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