9又4/5×5-12×(1/4+1/6-1/2)
问题描述：
9又4/5×5-12×(1/4+1/6-1/2)
答
9又4/5×5-12×(1/4+1/6-1/2)
=(9+4/5)×5-12×1/4-12×1/6+12×1/2
=9×5+4/5×5-3-2+6
=45+4+1
=50�������-2^2+[12-(-3)��2]��(-3)��̫������-2^2+[12-(-3)��2]��(-3)=-4+��12+6����(-3)=-4-6=-10