一双溜冰鞋125元，比一个排球贵58元，一副乒乓球拍比一个排球便宜42元。一副乒乓球拍多少钱？,e5Y+F5f0b3y7i3J'U
算式：提示,j6]/^:K0k-v,e5Y+F5f0b3y7i3J'U
答：一副乒乓球拍3x5B;E'i+l/}(|+F:z*_'f元。,e5Y+F5f0b3y7i3J'U