7.63*5.4+6.37*5.4-17.5*5.35*0.8 简便计算

7.63*5.4+6.37*5.4-17.5*5.35*0.8
=5.4x(7.63+6.37)-17.5x0.8*5.35
=14x(5.4-5.35)
=14x0.05
=0.7

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