Question

Мальчики помогите пожалуйста♡♡♡​

Answer 1

1)7^2*b/14a^3 = 49b/14a^3 = 7b/2a^3

2)d(a-b)/c(a-cb) = da-db/ca-c^2b = d-d/c-c^2 = 0/c-c^2

3)4x^6y/14x^2y^3z = 2x^3/7y^2z

4)a(7-b)/c(49-b^2) = a(1-1)/c(7-b) = a-a/7c-cb