作业帮(1╱2+2╱3-3╱4)÷1╱48简便算法,7.7×5╱5╱8＋7又7╱10÷8╱3简便算法,今天急用.
来源：学生作业帮助网 编辑：作业帮 时间：2024/10/06 10:49:43
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(1╱2+2╱3-3╱4)÷1╱48简便算法,7.7×5╱5╱8＋7又7╱10÷8╱3简便算法,今天急用.
(1╱2+2╱3-3╱4)÷1╱48简便算法,7.7×5╱5╱8＋7又7╱10÷8╱3简便算法,今天急用.
(1╱2+2╱3-3╱4)÷1╱48简便算法,7.7×5╱5╱8＋7又7╱10÷8╱3简便算法,今天急用.
(1╱2+2╱3-3╱4)÷1╱48
=(1╱2+2╱3-3╱4)×48
=1/2×48+2/3×48-3/4×48
=24+32-36
=56-36
=20
7.7×5╱8＋7又7╱10÷8╱3
=7.7×5╱8＋7.7×3/8
=7.7×（5/8+3/8）
=7.7