X=(12.7-20÷100)÷5+0.4=2.9
20/[12.7-5(x-0.4)]=100,x应是()
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相关问题
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X+Y=-20 (1.4÷100)x+(3.7/100)x=0.625 求 x
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20%x+12=0.5x
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解方程:x*50/7*(3/4*5/9*5/12)=7/20
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12*7+(X-12)*5+148=30*8+(X-30)*7+20
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0.02×0.1= 5.06x-4.07x= 12-7.8= a+0.4a= 12÷0.3= 4.6x+2.7x= 1.
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5/12x-x/4=1/3 0.5x-0.7=6.5-1.3x 3(x-7)+5(x-4)=15 (y-1)/2=2-(
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7.5x-7x=12.5 0.3+0.3x=0.39
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x+y=20 1.4/100+3.7/100y=0.625的解是多少
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7/2—x=5/1 x—12/5=1 x+1又分之4/1=5/1 x—20/11=4/3 x除2.5=6.25 x—0.