张晶买一支钢笔5. 62元,买一支圆珠笔4. 09元,买一支钢笔和一支圆珠笔共用多少元?,[2g7M,{(})k
,[2g7M,{(})k
算式:提示*U5[)Z(^.o6e'k9X,G9T,[2g7M,{(})k
答:买一支钢笔和一支圆珠笔共用5D(z6|1v)z*o5O*U3T8h*D,q元。,[2g7M,{(})k