(5x-14)/(3x+14)=1/2 怎么解
来源:百度知道 编辑:UC知道 时间:2024/05/24 04:34:19
(5x-14)/(3x+14)=1/2 由等比性质知道:
(5x-14)*2= (3x+14) *1 (3x+14 不等于0 )
移项得到:7x=42
故 x=6
5X-14=1.5X+7
3.5X=21
X=6
10x-28=3x+14
7x=42
x=?
2(5x-14)=(3x+14)且3x+14不能等于0
10x-28=3x+14
7x=14+28
所以x=6
6
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