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解方程:[(x+1)/2]%1=2+(2%x)/4

(1) x/2=y/3 ① 30%x-16%y=2% ② 解:由①,得3x-2y=0 ③ 由②,得15x-8y=1 ④ ④-③×5,得2y=1 解之,得y=1/2 把y=1代入①,得x/2=1/6 解之,得x=1/3 ∴x=1/3,y=1/2 (2) 2x+3y/4+2x-3y/3=7 ① 2x+3y/3+2x-3y/2=8 ② 解:①-②,...

(x-2)*2%=(x-3)*3%-1 两边同时乘以100得 2(x-2)=3(x-3)-100 2x-4=3x-9-100 2x-4=3x-109 3x-2x=109-4 x=105

(X十264)X3%十xx2%=264 解:3%X+7.92+2%X=264 5%X=264-7.92 X=5121.6

设A=1+0.2%+2%+20% B=0.2%+2%+20% 原式=A×(B+2)-(A+2)×B =A×B+2×A-(A×B+2×B) =2×A-2×B =2×(A-B) =2×1 =2

x=40÷2% x=2000

X+0.02X=98+4 1.02X=102 X=100

销售自己使用过的设备按3%减按2%征税的,就是发票上按3%计算,但实际缴纳税款按2%缴纳,所以销售额里有3个点的税,实际上只按2个点来算

X/(1-2%)+(7650-X)/(1+10%)=7650/(1+2%) X/0.98+(7650-X)/1.1=7650/1.02 (1.1x+0.98*7650-0.98x)/0.98*1.1=7650/1.02 0.12x=0.98*7650*1.1/1.02-0.98*7650 x=0.98*7650*1.1/(1.02*0.12)-0.98*7650/1.02 x=0.98*7650/(0.12*1.02)(1.1-1.02) x=0.9...

财管第二章吧😄 (1-2%)(1+x)-1=15.38% 0.98+0.98x-1=0.1538 0.98x-1=-0.8262 0.98x=0.1738 x=0.1773

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