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3/2x-1/4x=3/10 (解方程出来) 3/4:7/25=5/7:x (解方程)
急用.
人气:141 ℃ 时间:2020-04-07 11:48:03
解答
3/2x-1/4x=3/10 (解方程出来)
5/4 x=3/10
x=6/25
3/4:7/25=5/7:x (解方程)
3/4 x=5/7 * 7/25
3/4 x=1/5
x=4/15
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解方程 2x的平方+3x=3 ; x的平方-2x+1=25 ;x(2x-5)=4x-10
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解方程4x+3(2x-5)=25
解方程:x-25%=0.5 3/4x/3=1/2 7/8x-1/2x=3/4
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