Question

решите, пожалуйста ❤❤

Answer 1

10 4/21 - 4 10/21 - 3 19/21 = (10 - 4 - 3) + (4/21 - 10/21 - 19/21) = 3 + ( - 15/21) = 2 6/21 = 2 2/7