Пошаговое объяснение:
1)
1. 2/3 = 6 : х
5/3 = 6 : х
х = 6 : 5/3
х = 6 * 3/5
х = 18/5
х = 3. 3/5
2)
х : 3. 3/4 = 4. 8/15
х = 4. 8/15 * 3. 3/4
х = 68/15 * 15/4
х = 68/4
х = 17
3)
6 = х * 2. 3/7
6 = 2. 3/7х
-2. 3/7х = -6
-17/7х = -6
х = -6 : (-17/7)
х = -6 * (-7/17)
х = 42/17
х = 2. 8/17
Пошаговое объяснение:
1)
1. 2/3 = 6 : х
5/3 = 6 : х
х = 6 : 5/3
х = 6 * 3/5
х = 18/5
х = 3. 3/5
2)
х : 3. 3/4 = 4. 8/15
х = 4. 8/15 * 3. 3/4
х = 68/15 * 15/4
х = 68/4
х = 17
3)
6 = х * 2. 3/7
6 = 2. 3/7х
-2. 3/7х = -6
-17/7х = -6
х = -6 : (-17/7)
х = -6 * (-7/17)
х = 42/17
х = 2. 8/17