(﹣四分之三﹚÷﹙﹣五分之九﹚-﹙0.5﹚²×4
问题描述:
(﹣四分之三﹚÷﹙﹣五分之九﹚-﹙0.5﹚²×4
答
(﹣四分之三﹚÷﹙﹣五分之九﹚-﹙0.5﹚²×4
= (3/4) × (5/9) - 1
= 5/12 -1
= - 7/12