若方程3/5+3(x-1/2013)=4/5,则代数式7+30(x-1/2013)的值是_______.
问题描述:
若方程3/5+3(x-1/2013)=4/5,则代数式7+30(x-1/2013)的值是_______.
答
3/5+3(x-1/2013)=4/5
3(x-1/2013)=4/5-3/5
3(x-1/2013)=1/5
30(x-1/2013)=(1/5)*10=2
7+30(x-1/2013)
=7+2
=9
不懂的欢迎追问,