两边同乘1,则有2(x-3)-5(x+4)=1.6化简得 2x-6-5x-20=1.6 -3x=27.6 x=-9.2
10(x-3)/5-10(x+4)/2=1.6 20(x-3)-100(x+4)=16 20x-60-100x-400-16=0 -80x=476 x=-5.95
上式可以化简为2x-6-5x-8-1.6=0-3x-15.6=0x=15.6/3x=5.2