Question

跪求简便方法 1.8*（5.7-3.44/0.8） 简便 七分之四/【三 分之二*（1-八分之五）】

Answer 1

1.8 × (5.7 - 3.44/0.8)
= 1.8 × (5.7 - 4.3)
= 1.8 × 1.4
= 2.52

4/7÷ [2/3 × (1 - 5/8) ]
=4/7÷(2/3×3/8)
=4/7÷1/4
=4/7×4
=16/7

Answer 2

1.8*（5.7-3.44/0.8）
=1.8*(5.7-0.43)
=1.8×5.27
=(2-0.2)×5.27
=10.54-1.054
=9.486

简便 七分之四/【三 分之二*（1-八分之五）】
=4/7÷(2/3×3/8)
=4/7÷1/4
=4/7×4
=16/7

Answer 3

1.8 × (5.7 - 3.44/0.8)
= 1.8 × (5.7 - 4.3)
= 1.8 × 1.4
= 2.52

4/7 / [2/3 × (1 - 5/8) ]
= 4/7 / (2/3 × 3/8)
= 4/7 / (1/4)
= 16/7