方程(5x-15)/(4x+23)=15/23怎么解?
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方程(5x-15)/(4x+23)=15/23怎么解?
![方程(5x-15)/(4x+23)=15/23怎么解?](/uploads/image/z/15678577-1-7.jpg?t=%E6%96%B9%E7%A8%8B%285x-15%29%2F%284x%2B23%29%3D15%2F23%E6%80%8E%E4%B9%88%E8%A7%A3%3F)
两边同乘以(4x+23),把分母去掉
5x-15=15/23(4x+23)
5x-15=60/23 x+ 15
5x-60/23 x=15+15
x=690/55
5x-15=15/23(4x+23)
5x-15=60/23 x+ 15
5x-60/23 x=15+15
x=690/55