Question

упростите выражения а)7+2(3х-4)
б)8а+(3а-2)-(5а-2)
в) (7n+3m)+(8n-5m)-10n+2m

Answer 1

а)7+2(3х-4)=7+6х-8=6х-1б)8а+(3а-2)-(5а-2) =8а+3а-2-5а+2=6а
в) (7n+3m)+(8n-5m)-10n+2m=7n+3m+8n-5m-10n+2m=5n

Answer 2

а первое не знаешь?

Answer 3

yt pfvtnbk? ctqxfc

Answer 4

7+2(3х-4) = 7+6х-8 = -1 + 6х
8а+(3а-2)-(5а-2)= 8а+3а-2-5а+2=6а
(7n+3m)+(8n-5m)-10n+2m= 7n+3m+8n-5m-10n+2m= 15n - 0m
(Наверно так)