某市举行数学竞赛，共计有20道题，规定每做对一道题得5分，做错或不答，一道题扣3分，丽丽一共的了76分，她做对几道题？0P'f4e9J0z*a*M4B;Q(Z
算式：提示*u:C.q4X)j4C7y/`1a(j1{*l8`0P'f4e9J0z*a*M4B;Q(Z
答：她做对/j4z7R*s6r(v(v5a9z7]道题。0P'f4e9J0z*a*M4B;Q(Z