题目是不是没完整啊.后面应该还有个1/2吧?
(36*x)/(5*(x^2 + 25)^(1/2)) + (18*(2*x - 40))/(5*((x - 20)^2
1个回答
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3又2分之1÷4+360x25%+0.25x36.5=? (7.25x40%+2.75x2/5)÷
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40x=35*(x=4) 7:5=(1/2x):(1/2-42) 3:5=x:(20-x) 1.5x=1.25*(x+1
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X+16/7=12/11 18/5-x=15/2 x-36/5=27/4 x-8/5=2-1.25 9/7=1+x-3/
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解方程25%x+40%x=5.2 (1-75%)x=36 120-25%x=100 x/(1-24%)=1.14
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解方程 25%x=40*18% x=5分之2
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解放程 60%X+25=40 X-10%=18 X+30%X=52 (1-25%)X=36 2X=13/40 3/4X-
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解方程:1.60%+25=40 2.X-10%X=18 3.x+30%X=52 4.(1-25%)X=36
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方程:15x=60 x+2x=12.6 40%x=4.2 12+x=25 2x÷5=15 4x-1.6x=36
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3X+6=12 40-4X=20 5+6X=35 18=2X-6 20=38-2X = = = = = = = = =
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18x+[5-x]2=40+6x