X-[(X-3500)*0.25-1005]=10000

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X-[(X-3500)*0.25-1005]=10000
X-[(X-3500)*0.25-1005]=10000

X-[(X-3500)*0.25-1005]=10000
X-[(X-3500)*0.25-1005]=10000
x-(x-3500)*0.25+1005=10000
x-0.25x+875+1005=10000
0.75x=10000-1880
0.75x=8120
x=32480/3

（X+X)+(X-X)+(X*X)+(X/X)=100 x+2x+3x+.+100x X-[(X-3500)*0.25-1005]=10000 0.3(x+1)+0.25(100-x)=2/5x X/100 + X/80 X+X+X+X+X+X+100X=1690 问：X等于多少 x(x-1)(x-2)...(x-99)(x-100) 8+5x=100 0.273除x=0.35 25-0.25x=15 4.2x+2.8x=148+5x=100 0.273除x=0.3525-0.25x=154.2x+2.8x=14 x x X x x x x x x x