Question

Номер 2. Прошу сделайте!

Answer 1

5а-3b-8a+12b = 5a-8a-3b+12b = -3a+9b
16c+(3c-2)-(5c+7) = 16c+3c-2-5c-7 = 16c+3c-5c-2-7=14c-9
7-3(6y-4) = 7-18y+24= 7+24-18y = 31-18y

Answer 2

1)5a-3b-8a+12b=-3a+9b
2)16c+(3c-2)-(5c+7)=16c+3c-2-5c-7=14c-9
3)7-3(6y-4)=7-18y+12=-18y+19