1-3\2x=3x+5\2 一减二分之三X等于三X加二分之五
1-3\2x=3x+5\2=?一减二分之三X等于三X加二分之五等于多少?
人气:481 ℃ 时间:2019-10-24 00:07:41
解答
1 - 3/2 x = 3x + 5 / 2
所以 (3+3/2)x = (1 - 5/2)
所以 9/2 x = - 3/2
所以 x = -1/3
所以 3x + 5 / 2 = 3 * (-1/3) + 5/2 = -1 + 5 / 2 = 3/2
同时还可以验证:1 - 3/2x = 1 - 3/2 * (-1/3) = 1 + 1/2 = 3/2
所以结果是 3/2,即1.5
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