(3/4+1/20)*1/2=? (7/+12-1/3)*16/19=? (11/24+1/6*1 3/5=?

Question

(3/4+1/20)*1/2=? (7/+12-1/3)*16/19=? (11/24+1/6*1 3/5=?

Answer 1

3 не понятно как-то, попробуй сам

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Answer 2

(3/4+1/20)×1/2=(15/20+1/20)×1/2=16/20×1/2=2/5
(7/12-1/3)*16/19=(7/12-4/12)×16/19=4/19
(11/24-1/6)×1 3/5=(11/24-4/24)×8/5=5/8×8/5=1