[질문] [우리동네]0.07미지수-0.02=0.05미지수+0.04 0.4미지수+0.8=2 0.4미지수-1=0.5미지수-2 0.5(미지수-6)=미지수+1 1.3미지수-0.8(미지수-2)=2.1미지수