已知方程1/4+5(x-1/2005)=1/2,求代数式3+20(x-1/2005)的值.
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已知方程1/4+5(x-1/2005)=1/2,求代数式3+20(x-1/2005)的值.
已知方程1/4+5(x-1/2005)=1/2,求代数式3+20(x-1/2005)的值.
已知方程1/4+5(x-1/2005)=1/2,求代数式3+20(x-1/2005)的值.
1/4+5(x-1/2005)=1/2
x-1/2005=[(1/2)-(1/4)]/5
=1/20
3+20(x-1/2005)
=3+20*(1/20)
=3+1=4