x-y=100
0.12x-0.1y=100
1.2x-y=1000
0.2x=900
x=4500
y=4400
{x-y=100 {12%x-10%y=100
2个回答
相关问题
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X+Y=7(100X+Y)-(10Y+X)=(10Y+X)-(10X+Y)
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（1560-X）/X*100%=25% （1350-Y）/Y*100%=-10%求解
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100(95-x) - 80(100-x) = 100 (240-x)/x*100%=20% (100%-10%)*y=
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解方程 Y=X+Z Y-Z=2 100Z+10Y+X-(100X+10Y+Z)=99
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x+y+z=100 10x+0.5y+3z=100
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100(x+1)=2(y+5) 100(x+1)+y+10=209
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Y=(X-8)[100-10(X-10)]
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9x+9y=100 10x+10y=132
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x+y=10x100/80
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y=-10x+100x+6000