x+3\4x=280怎么解.
来源:学生作业帮助网 编辑:作业帮 时间:2024/06/22 03:47:19
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x+3\4x=280怎么解.
x+3\4x=280怎么解.
x+3\4x=280怎么解.
x+3\4x=280
7x/4=280
x=280*4/7
x=160
x+3\4x=280
7/4x=280
x=280*4/7=160
X+3/4x=280
(1+3/4)x=280
7/4x=280
x=4/7*280
x=160
先左边通分得【(4+3)x】/4=280
在两边同乘以4得7x=1120
最后两边同除以7得x=160