Question

简便计算，急求。

• 你的回答被采纳后将获得：
• 系统奖励15（财富值+成长值）+难题奖励10（财富值+成长值）+提问者悬赏20（财富值+成长值）

Answer 1

75×3/4+0.75×26-3/4
=（75+26-1）×3/4
=100×3/4
=75

17×（16/17-5/7）×7
=17×16/17×7-17×5/7×7
=16×7-17×5
=112-85
=27

8又1/4×1又3/5×1又1/11
=33/4×8/5×12/11
=（33/4×12/11）×8/5
=9×8/5
=14.4

105×2/7+105×6/7-10又1/2×10
=105×2/7+105×6/7-105
=105×（2/7+6/7-1）
=105×1/7
=15

12.5×3/8+12.5×7/8
=12.5×（3/8+7/8）
=12.5×5/4
=15.625

（3又1/8×1.2-2.75）×1又4/5
=（3.75-2.75）×1又4/5
=1×1又4/5
=1又4/5

3.2+3.2×7又5/9+1又4/9×3又1/5
=3.2×（1+7又5/9+1又4/9）
=3.2×10
=32