已知方程1/4+5(x-1/2012)=1/2,求代数式3+20(x-1/2012)的值

问题描述:

已知方程1/4+5(x-1/2012)=1/2,求代数式3+20(x-1/2012)的值

1/4+5(x-1/2012)=1/2
5(x-1/2012)=1/4
3+20(x-1/2012)
=3+4*5(x-1/2012)
=3+4*1/4
=4