计算 9999×7778+3333×6666 1/20+1/30+1/42+1/5

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计算9999×7778+3333×66661/20+1/30+1/42+1/5计算9999×7778+3333×66661/20+1/30+1/42+1/5计算9999×7778+3333×66661

计算 9999×7778+3333×6666 1/20+1/30+1/42+1/5
计算 9999×7778+3333×6666 1/20+1/30+1/42+1/5

计算 9999×7778+3333×6666 1/20+1/30+1/42+1/5
9999×7778+3333×6666
=9999×7778+9999×2222
=9999×(7778+2222)
=9999×10000
=99990000
1/20+1/30+1/42+1/56+1/72+1/90
=1/4-1/5+1/5-1/6+1/6-1/7+1/7-1/8+1/8-1/9+1/9-1/10
=1/4-1/10
=3/20

99990000
3/20