Ответ:
1. 4/19<12/19; 1/7<3/7; 4/5>2/3; 3 1/2>3 2/5;
2.1) 4/5 +2/3=22/15(км)- за 2 часа
2)3-22/15= 1 15/15 + 15/15- 22/15=18/15(км)
3. 18/5-х+ 16/5=13/3
34/5-13/3=х
(34×3-13×5)/15 =х
37/15= х
Х=2 7/15
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Answers & Comments
Ответ:
1. 4/19<12/19; 1/7<3/7; 4/5>2/3; 3 1/2>3 2/5;
2.1) 4/5 +2/3=22/15(км)- за 2 часа
2)3-22/15= 1 15/15 + 15/15- 22/15=18/15(км)
3. 18/5-х+ 16/5=13/3
34/5-13/3=х
(34×3-13×5)/15 =х
37/15= х
Х=2 7/15