3675-(11+13+15+17+19)=_.
问题描述:
3675-(11+13+15+17+19)=______.
答
3675-(11+13+15+17+19),
=3675-[(11+19)+(13+17)+15],
=3675-[30+30+15],
=3675-75,
=3600.
故答案为:3600.