Ответ:
Пошаговое объяснение:
6.
2 4/5 : 3 1/2 = 9/10 : 1 1/8
2 4/5 * 1 1/8 = 3 1/2 * 9/10
14/5 * 9/4 = 7/2 * 9/10
7/5 * 9/4 = 7/2 * 9/10
63/20 = 63/20
ВІРНА
7.
7х + 9х + 8х = 48
24х = 48
х = 2
1) 7 * 2 = 14 см
2) 9 * 2 = 18 см
3) 8 * 2 = 16 см
8.
3 1/8 : 2 1/2 = 2 2/3 : х
3 1/8 * х = 2 1/2 * 2 2/3
25/8х = 5/2 * 8/3
25/8х = 5/1 * 4/3
25/8х = 20/3
х = 20/3 : 25/8
х = 20/3 * 8/25
х = 4/3 * 8/5
х = 32/15
х = 2 2/15
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Answers & Comments
Ответ:
Пошаговое объяснение:
6.
2 4/5 : 3 1/2 = 9/10 : 1 1/8
2 4/5 * 1 1/8 = 3 1/2 * 9/10
14/5 * 9/4 = 7/2 * 9/10
7/5 * 9/4 = 7/2 * 9/10
63/20 = 63/20
ВІРНА
7.
7х + 9х + 8х = 48
24х = 48
х = 2
1) 7 * 2 = 14 см
2) 9 * 2 = 18 см
3) 8 * 2 = 16 см
8.
3 1/8 : 2 1/2 = 2 2/3 : х
3 1/8 * х = 2 1/2 * 2 2/3
25/8х = 5/2 * 8/3
25/8х = 5/1 * 4/3
25/8х = 20/3
х = 20/3 : 25/8
х = 20/3 * 8/25
х = 4/3 * 8/5
х = 32/15
х = 2 2/15