x-3/0.5-x+4/0.2=1.6怎么算?急
问题描述:
x-3/0.5-x+4/0.2=1.6怎么算?急
答
x-3/0.5-(x+4)/0.2=1.6
x-6-5(x+4)=1.6
x-6-5x-20=1.6
-4x=1.6+6+20
-4x=27.6
x=-9.9
答
x-3/0.5-x+4/0.2=1.6
2x-6-5x-20=1.6
-3x=27.6
x=-9.2