递等式 一共4题 答4题① 1/3×1/15+1/3×1/5 ② 3/4-5/8×3/4 ③ 14/25÷(1/5+1/2) ④ [ 3/4-(7/16-0.25)]×17/9
问题描述:
递等式 一共4题 答4题
① 1/3×1/15+1/3×1/5 ② 3/4-5/8×3/4 ③ 14/25÷(1/5+1/2) ④ [ 3/4-(7/16-0.25)]×17/9
答