救救我,一道超难奥数题!15.6*78-15.6*14-64*5.

网友回答

=15.6*(78-14)-64*5.6
=15.6*64-64*5.6
=(15.6-5.6)*64
=10*64
=640======以下答案可供参考======
供参考答案1:
=15.6*（78-14）-64*5.6
=64*（15.6-5.6）
=640你很无聊