三场比赛中,红队共进4球,失2球,净胜球数为(+4)+(-2)=+(4-2)=2
黄队共进2球,失4球,净胜球数为(+2)+(-4)=-(4-2)=-2
蓝队共进()球,失()球,净胜球数为______=___
怎么计算蓝队进几球,失几球?
三场比赛中,红队共进4球,失2球,净胜球数为(+4)+(-2)=+(4-2)=2
黄队共进2球,失4球,净胜球数为(+2)+(-4)=-(4-2)=-2
蓝队共进()球,失()球,净胜球数为______=___
怎么计算蓝队进几球,失几球?
题意可知,蓝队和黄队打失一球,和红队进一球,所以净胜球数0