А) 8c – 2d – 11c + 7d; б) 12b + (7b – 3) – (8b + 6); в) 3 – 4(5a – 6).

Question

А) 8c – 2d – 11c + 7d; б) 12b + (7b – 3) – (8b + 6); в) 3 – 4(5a – 6).

Answer 1

А) = -3c + 5d
b) 12b + 7b - 3 - 8b - 6 = 11b - 9
в) 3 - 20а + 24 = 27 - 20а

Answer 2

A) =-3c+5d
б) =12b+7b-3=19b-3
в) =3-20a+24