Найдите неизвестные члены пропорций. 1)х/7 = 3/5, x =
2)5/у = 10/9, у =
3)7/6 = а/15, а =
4)2/3 = 5/b, b =
Решите уравнения.
1)5х = 45, х = 45:5, х =
2)-7у = -63, у =
3)3/5z =12, z =
4)2,3c = -16,1, c =
5)n+45 = 51, x =
6)81-3m = 0, m =
2)5/у = 10/9, у =
3)7/6 = а/15, а =
4)2/3 = 5/b, b =
Решите уравнения.
1)5х = 45, х = 45:5, х =
2)-7у = -63, у =
3)3/5z =12, z =
4)2,3c = -16,1, c =
5)n+45 = 51, x =
6)81-3m = 0, m =