27:X=45:30
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27:X=45:30
27:X=45:30
27:X=45:30
45x=27×30.
x=18
x=27*30/45=18
x=18
18
化简得45*X=27*30得X=18
27:X=45:30
12+60%x=48 x-25%x=25 30%x+45%x=27 (1+40%)x=7
30%x+45%x=27 求完解每步!
(x+30)*(x-18)=x*x
45X=(4-X)*30 X=1.6
(x-2)/30+(x-3)/45+x/90=1
45x=(9-x)30 x怎么算
(X-30)/X=45/100 求X
50x+45(27-x)=1290
45x-30=50x+30
x/45=(x+30)/60+1 x=270x/45=(x+30)/60+1x=270
1.5x+27=30+0.5x
1.5x+27=30+0.5x
下列式子求导1.f(x)=x^3-3x^2+3x-22.g(x)=-3x^3+5x^2-4x+113.u(x)=-x^3+27x+74.h(x)=42-45x-3x^2+3x^35.f(x)=Lnx+x6.g(x)=x/(2+x^2)
x/45=1+(x+30)/60
X/45=(X+30)/60-1
45x=[9-x]*30
45x=[9-x]*30