4【2x-1】-【10x+1】=3【2x+1]12 x+3\4-2-3x\8=5\2 1\5X=[82-x]\4+2
人气:102 ℃ 时间:2020-05-28 15:38:58
解答
4【2x-1】-【10x+1】=38x-4-10x-1=310x-8x=-4-1-32x=-8x=-4(x+3)\4-(2-3x)\8=5\2两边乘82x+6-2+3x=203x+2x=20-6+25x=16x=3.21\5X=[82-x]\4+2两边乘204x=410-5x+405x+4x=410+409x=450x=50
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