从56.7里减去1又10分之9的3倍,所得的差再除以3,商是多少?
问题描述:
从56.7里减去1又10分之9的3倍,所得的差再除以3,商是多少?
答
(56.7-1.9*3)/3
=(56.7-5.7)/3
=51/3
=17
答
(56.7-1又9/10×3)÷3
=(56.7-5.7)÷3
=51÷3
=17
答
[56.7-3×(1+9/10)]/3
=(56.7-3×19/10)/3
=(56.7-5.7)/3
=51/3
=17
答
[56.7-(1+9/10)×3]÷3
=56.7÷3-1.9×3÷3
=18.9-1.9
=17
答
商=(56.7-1.9×3)÷3=17