解方程和简便计算解方程:1.5(x+4)-2x=x+482.4.5-x=2x-63.0.3x+7x-0.25x=21.1
来源:学生作业帮 编辑:神马作文网作业帮 分类:数学作业 时间:2024/09/27 08:14:40
解方程和简便计算
解方程:
1.5(x+4)-2x=x+48
2.4.5-x=2x-6
3.0.3x+7x-0.25x=21.15
能简便的要简便`不简便的要按顺序计算`(乘先减后的那些都会吧`)
1.(根据我的眼光`这道是简便的)4.68×1.1-0.468+4.68×9
2.(再根据我的眼光`这道是不简便的)[(8.73-8.23)×0.6-0.1]÷0.05
3.(还根据我的眼光`这道是简便的`)0.5×[9.9-(10-0.56÷5.6)]
4.(我不根据了`自己看着办吧`)0.01÷[(3.8+4.02)÷78.2]-0.01
解方程:
1.5(x+4)-2x=x+48
2.4.5-x=2x-6
3.0.3x+7x-0.25x=21.15
能简便的要简便`不简便的要按顺序计算`(乘先减后的那些都会吧`)
1.(根据我的眼光`这道是简便的)4.68×1.1-0.468+4.68×9
2.(再根据我的眼光`这道是不简便的)[(8.73-8.23)×0.6-0.1]÷0.05
3.(还根据我的眼光`这道是简便的`)0.5×[9.9-(10-0.56÷5.6)]
4.(我不根据了`自己看着办吧`)0.01÷[(3.8+4.02)÷78.2]-0.01
我来算递等计算吧,
1.4.68×1.1-0.468+4.68×9
=4.68×1.1-(0.468×10)+4.68×(9÷10)
=4.68×1.1-4.68+4.68×0.9
=4.68×1.1+4.68×0.9-4.68
=4.68×(1.1+0.9-1)
=4.68×1
=4.68
2.[(8.73-8.23)×0.6-0.1}÷0.05
=[0.5×0.6-0.1]÷0.05
=[0.3-0.1]÷0.05
=0.2÷0.05
=4
1.4.68×1.1-0.468+4.68×9
=4.68×1.1-(0.468×10)+4.68×(9÷10)
=4.68×1.1-4.68+4.68×0.9
=4.68×1.1+4.68×0.9-4.68
=4.68×(1.1+0.9-1)
=4.68×1
=4.68
2.[(8.73-8.23)×0.6-0.1}÷0.05
=[0.5×0.6-0.1]÷0.05
=[0.3-0.1]÷0.05
=0.2÷0.05
=4
解方程和简便计算解方程:1.5(x+4)-2x=x+482.4.5-x=2x-63.0.3x+7x-0.25x=21.1
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