问题
填空题
计算:-[-(0.1x-y)+2(x+0.2y)]=______.
答案
原式=-(-0.1x+y+2x+0.4y)=-(1.9x+1.4y)=-1.9x-1.4y;
故答案为:-1.9x-1.4y.
计算:-[-(0.1x-y)+2(x+0.2y)]=______.
原式=-(-0.1x+y+2x+0.4y)=-(1.9x+1.4y)=-1.9x-1.4y;
故答案为:-1.9x-1.4y.