14x2.5+2.5x(11.28+2.72)怎样简便就怎样计算
问题描述:
14x2.5+2.5x(11.28+2.72)怎样简便就怎样计算
答
14x2.5+2.5x(11.28+2.72)
=14x2.5+2.5x14
=2x2.5x14
=5x14
=70