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1/(x-7)+1/(x-12)=1/(x-6)+1/(x-11)x=9是成立吗
题目详情
1/(x-7)+1/(x-12)=1/(x-6)+1/(x-11)
x=9是成立吗
x=9是成立吗
▼优质解答
答案和解析
把x = 9 代入方程1/(x-7)+1/(x-12)=1/(x-6)+1/(x-11)
左边＝1/2 + 1/-3 = 1/2 - 1/3 = 1/6
右边＝1/3 + 1/-2 = 1/3 - 1/2 = - 1/6
左边≠右边
所以 x = 9不能使方程成立
左边＝1/2 + 1/-3 = 1/2 - 1/3 = 1/6
右边＝1/3 + 1/-2 = 1/3 - 1/2 = - 1/6
左边≠右边
所以 x = 9不能使方程成立
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