方程两边是负数怎么办,如负二十分之一x等于负一 -0.05x=-1

方程两边是负数怎么办,如负二十分之一x等于负一 -0.05x=-1
方程两边是负数怎么办,如负二十分之一x等于负一 -0.05x=-1

方程两边是负数怎么办,如负二十分之一x等于负一 -0.05x=-1
-0.05x=-1
　　则x=（-1）/(-0.05)=1/0.05=20

直接变正 0.05x=1
~期望您的采纳~
~谢谢~
o(︶︿︶)o

两边负号可以直接约去，相当于两边同乘以或者除以负一。所以两边都是正的。正确答案20
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全部展开

两边负号可以直接约去，相当于两边同乘以或者除以负一。所以两边都是正的。正确答案20
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收起

两边负号都去掉 就变成 0.05x=1

-0.05X=-1,两边同时乘以或者除以-1,得:0.05x=1,再两边同时除以0.05得.x=1/0.05.分子分母同时乘以100.得,x=100/5.解得.x=20

负二十分之一x=负一
【两种办法】
(1)两边乘以-1
二十分之一x=1
（2）两边+1+二十分之一x
二十分之一x=1
然后两边乘以20
x=20