Question

найдите значение выражения
а) (3/5 + 1/15) * 3
б) (7/16 - 1/4) : 4

Answer 1

а) 1) 3/5 + 1/15 = 9/15 + 1/15 = 10/15
2) 10/15 *3 = 10/15 * 3/1 = 10/5 * 1/1 = 10/5 = 2

б) 1) 7/16 - 1/4 = 7/16 - 4/16 = 3/16
2) 3/16 : 4 = 3/16 : 4/1 = 3/4 : 1/1 = 3/4