(17/5-8/3×3/4)÷4/5

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(17/5-8/3×3/4)÷4/5

(17/5-8/3×3/4)÷4/5
(17/5-8/3×3/4)÷4/5

(17/5-8/3×3/4)÷4/5

=(17/5-2)/(4/5)=7/4

(17/5-24/12)÷4/5