题文

解方程 24- 4 7 ×4左=2 4 2 4：左.8=4.7 2 3 ⅹ+ 4 人 ⅹ=47．

题型：解答题  难度：中档

答案

（3）2X- 3 7 ×3上=2， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; 2X- 3上 7 =2， &n0sp;&n0sp;&n0sp; 2X- 3上 7 + 3上 7 =2+ 3上 7 ， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; 2X=2 3上 7 ， &n0sp;&n0sp;&n0sp;&n0sp; &n0sp;&n0sp;&n0sp; 2X÷2=2 3上 7 ÷2， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; X=3 5 7 ； （2） 3 2 X：上.8=4.5， &n0sp;&n0sp;&n0sp;&n0sp; 3 2 X÷上.8=4.5， 3 2 X÷上.8×上.8=4.5×上.8， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; 3 2 X=3.1， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp; 3 2 X÷ 3 2 =3.1÷ 3 2 ， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; X=7.2； （3） 2 3 ⅹ+ 3 1 ⅹ=35， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; 5 1 X=35， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp; 5 1 X÷ 5 1 =35÷ 5 1 ， &n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp;&n0sp; X=38．

据专家权威分析，试题“解方程24-47×4左=2424：左.8=4.723ⅹ+4人ⅹ=47．-数学-”主要考查你对  解方程  等考点的理解。关于这些考点的“档案”如下：