试卷更新日期:2020-11-23 类型:同步测试
①12x÷0.8=90
②2.5(x - 9) = 10
③3.5x+2.6x = 12.2
④5x+0.2=0.4
⑤4.5x-x=70
⑥2(x+3.5)=10
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