太热太热热
-2/5X+1=X+1/10 X-1/3-1=X/2+1 3X+1/4-2(X+1)/3=1
3个回答
相关问题
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1/1x2+1/2x3+1/3x4+1/4x5+…+1/10x11
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1x2=1/3(1x2x3=0x1x2 ) 2x3=1/3(2x3x4-1x2x3) 3x4=1/3(3x4x5- 2x
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1x2=1|3(1x2x3-0x1x2) 2x3=1|3(2x3x4-1x2x3) 3x4=1|3(3x4x5-2x3x
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x:10=[1/4]:[1/3]0.4:x=1.2:2[12/2.4]=[3/x][1/2]:[1/5]=[1/4]:x
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1/2x3+1/3x4+1/4x5.+1/9x10
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4【2x-1】-【10x+1】=3【2x+1]-12 x+3\4-2-3x\8=5\2
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(1)x-2x-1/3=x-1/2 (2)3x+1/2 - 3x-2/10=2- 2x+3/5
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解方程(1)1/4x-1/12x=1/3 (2)x+1/2-x-1/3=1 (3)2x+1/3-(x-5)=2/3 (4
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1/x-1+1/(x-1)(x-2)+1/(x-2)(x-3)+1/(x-3)(x-4)+1/(x-4)(x-5)
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解比例 (x+1):4=3:6 0.75:x+1=1:4 2:x=3:2x-1 2x+10:5x+10=2:3