Д) (1.3/4-2.3/8):1.3/5 е) (1.7/15+3.1/3)*5/12 /-дробь , .-целое

Question

Д) (1.3/4-2.3/8):1.3/5 е) (1.7/15+3.1/3)*5/12 /-дробь , .-целое

Answer 1

Д) (1.3/4-2.3/8):1.3/5=-5/8:1.3/5=-5/8:8/5=-5/8×5/8=-25/64; Ё)(1.7/15+3.1/3)*5/12=4.12/15×3/12=72/15×5/12=6/3×1/1=6/3=2

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