(70+1/68)*1/69怎么简算

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(70+1/68)*1/69怎么简算
(70+1/68)*1/69怎么简算

(70+1/68)*1/69怎么简算
(70+1/68)*1/69
=(69+1+1/68)*1/69
=1+69/68*1/69
=1+1/68
=69/68
希望对你有帮助
祝你学业进步!(*^__^*)

(70+1/68)*1/69
=(69+69/68)*1/69
=69*1/69+69/68*1/69
=1+1/68
=69/68

71+73+69+74+68+70+69 =70×7+(1+3-1+4-2-1) =490+4 =494 70*7+(1+3-1+4-2+0-1)=490+4=494,希望对你有帮助!! 71+