数学.解方程x▲解出x:(x/60)+(11x/780)+(1/4)-(x/390)=(x/60)+({15-x}/5)
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数学.解方程x▲
解出x:(x/60)+(11x/780)+(1/4)-(x/390)=(x/60)+({15-x}/5)
解出x:(x/60)+(11x/780)+(1/4)-(x/390)=(x/60)+({15-x}/5)
![数学.解方程x▲解出x:(x/60)+(11x/780)+(1/4)-(x/390)=(x/60)+({15-x}/5)](/uploads/image/z/6073019-35-9.jpg?t=%E6%95%B0%E5%AD%A6.%E8%A7%A3%E6%96%B9%E7%A8%8Bx%E2%96%B2%E8%A7%A3%E5%87%BAx%EF%BC%9A%EF%BC%88x%2F60%EF%BC%89%2B%EF%BC%8811x%2F780%EF%BC%89%2B%EF%BC%881%2F4%EF%BC%89%EF%BC%8D%EF%BC%88x%2F390%EF%BC%89%EF%BC%9D%EF%BC%88x%2F60%EF%BC%89%2B%EF%BC%88%EF%BD%9B15%EF%BC%8Dx%EF%BD%9D%2F5%EF%BC%89)
(x/60)+(11x/780)+(1/4)-(x/390)=(x/60)+({15-x}/5)
12x+11x+195-2x=12x+156(15-x)
12x+11x+195-2x=12x+2340-156x
12x+11x-2x-12x+156x=2340-195
165x=2145
x=13
12x+11x+195-2x=12x+156(15-x)
12x+11x+195-2x=12x+2340-156x
12x+11x-2x-12x+156x=2340-195
165x=2145
x=13
数学.解方程x▲解出x:(x/60)+(11x/780)+(1/4)-(x/390)=(x/60)+({15-x}/5)
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