甲、乙、丙三数之和是242，乙比丙的2倍少5，甲比丙的3倍多7。甲、乙、丙三数各是多少？(R*[:@/m8?3L(a1i+[1?1W
算式：提示1p4V*E9q4`;S)O(R*[:@/m8?3L(a1i+[1?1W
答：甲、乙、丙各是8B7t*G7\'?3V,_/N+B2o。(R*[:@/m8?3L(a1i+[1?1W