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6*4x+x-5 = 7*3x+4*5y-15=
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6*4x+x-5 = 7 *3x+4*5y-15=
人气:243 ℃ 时间:2020-04-24 09:56:27
解答
6*4x+x-5 = 7*3x+4*5y-15
24X+X-5=21X+20Y-15
25X-5=21X+20Y-15
25X-5-21X-20Y+15=0
4X-20Y+10=0
2X-10Y+5=0两道题6*4x+x-5 = 24X+X-5=25X-5 7*3x+4*5y-15=21X+20Y-15
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