Спримерами ) 1) -3a+7a-10a= 2) (3x-+7)= 3) -2*(2,5m-1)+3*(m-4)= - вопрос №202427513710237322513447558 от rrrrrrrrtttttttttyyy 19.05.2022 22:25

Question

Алгебра: Спримерами ) 1) -3a+7a-10a= 2) (3x-+7)= 3) -2*(2,5m-1)+3*(m-4)= 4) 7a-5b-5a+8b= 5)2*(3m-n)-9*(m-2n)= с решением.

rrrrrrrrtttttttttyyy · Answer

1) -3a+7a-10a= a * (-3 + 7 - 10) = -6a2) (3x-5)-(-2x+7)= 3x - 5 + 2x - 7 = 5x - 123) -2*(2,5m-1)+3*(m-4)= -5m + 2 + 3m - 12 = -2m - 104) 7a-5b-5a+8b= 2a + 3b5)2*(3m-n)-9*(m-2n)= 6m - 2n - 9m + 18n = -3m + 16n...