用递等式计算 能简则简 600减3380除以13加340 4.625加7分之5加2.375加7分之2

2024-12-25 07:16:12
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回答1:

600减3380除以13加340
=600-(3380÷13+340)
=600-(260+340)
=600-600
=0

4.625加7分之5加2.375加7分之2
=4.625+5/7+2.375+2/7
=(4.625+2.375)+(5/7+2/7)
=7+1
=8