Question

已知方程4/1+2/1(x+2009/1)=4/3,你能用较简单的方法求4020-2010(x+2009/1)的值吗

Answer 1

1/4+1/2*(x+1/2009)=3/4

1/2(x+1/2009)=3/4-1/4=1/2

x+1/2009=1

4020-2010(x+1/2009)

=4020-2010

=2010