解方程4x+(30-x)X2=80
问题描述:
解方程4x+(30-x)X2=80
4x+(30-x)X2=80
答
4x+(30-x)X2=80 4x+60-2x=80 2x=20 x=10
解方程4x+(30-x)X2=80
4x+(30-x)X2=80
4x+(30-x)X2=80 4x+60-2x=80 2x=20 x=10