6×5-1/2x=18 3/4x-1/3x=5/2 x-6/13x=2/5 x＋5/7x=8/9×3/2 6×5-1/2x=18 _数学解答

6×5-1/2x=18 3/4x-1/3x=5/2 x-6/13x=2/5 x＋5/7x=8/9×3/2
6×5-1/2x=18 3/4x-1/3x=5/2 x-6/13x=2/5 x＋5/7x=8/9×3/2

人气：338 ℃　时间：2019-08-20 21:23:15

解答

6×5-1/2x=18
-0.5x=18-30
-0.5x=-12
x=24
3/4x-1/3x=5/2
5/12x=5/2
x=6
x-6/13x=2/5
7/13x=2/5
x=26/35
x＋5/7x=8/9×3/2
12/7x=4/3
x=7/9
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