Question

уравнение 2цел. 1/3к=4цел1/2×1цел1/9

Answer 1

2 1/3 * к = 4 1/2 * 1 1/9,
2 1/3 * к = 9/2 * 10/9,
2 1/3 * к = 10/2,
2 1/3 * к = 5,
к = 5 : 2 1/3,
к = 5 : 7/3,
к = 5 * 3/7,
к = 15/7,
к = 2 1/7