7.63*5.4+6.37*5.4-17.5*5.35*0.8 简便计算
问题描述：
7.63*5.4+6.37*5.4-17.5*5.35*0.8 简便计算
答
7.63*5.4+6.37*5.4-17.5*5.35*0.8
=5.4*（7.63+6.37）-14*5.35
=5.4*14-14*5.35
=14*（5.4-5.35）
=14*0.05
=0.7