0.3*2x-1=0.5x+1?0.6x-1=0.5x+1x=20?
0.3*(2x-1)=0.5(x+1)0.6x-0.3=0.5x+0.50.1x=0.8x=8
0.3*2X-1=0.5X+10.6X-1=0.5X+10.6X-0.5X=1+10.1X=2X=21题目没表达清楚,有二种答案 0.3*(2x-1)=0.5(x+1) 0.6x-0.3=0.5x+0.5 0.1x=0.8 x=8
X=8
0