(4/5+1/4)÷7/3+7/10

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(4/5+1/4)÷7/3+7/10

(4/5+1/4)÷7/3+7/10
(4/5+1/4)÷7/3+7/10

(4/5+1/4)÷7/3+7/10
(4/5+1/4)÷7/3+7/10
=3/7+7/10
=51/70