Question

СРОЧНО ПОМОГИТЕ нужно решение​

Answer 1

Объяснение:

а) 1,1x - 2,7y + 0,8x - x + 3y = 1,9x + 0,3y - x = 0,9x + 0,3y

б) 27a - 3,1b + 9a + 3,1a + 0,4b - a = 36a - 2,7b + 3,1a - a = 38,1 - 2,7b

в) 1/3x + 2/5y - 2x + 1 1/4y = 1/3x + 8/20y + 25/20y - 2x = 1/3x - 2x + 33/20y = 1/3x - 6/3x + 1,65y = - 5/3x + 1,65y = - 1 2/3 + 1,65y

г) 15a - 4x - 5,6a + 2,3x + a = 10,4a -1,7x

д) 67,1a - 1/3b + 1/5a + 2b + 2,5a - 7b = 67,1a + 0,2a + 2,5a - 1/3b + 2b - 7b = 69,8a - 5/3b - 7b = 69,8a - 26/3b = 69,8a - 12b

е) 1/4b - 7x - 3,2b + 2 3/4x + b + 0,6x = -7x + 11/4x + 0,6x + 1/4b - 3,2b + b = -6,4x + 55/20x + 5/20b - 2,2b = -3,65x - 1,95b

ж) xyx - 2x²y + 2x - 3x = x²y - 2x²y - x = -x²y - x

з) ba² - 3a³ + 7aba + 3a² - 8a²b = 8ba² - 3a³ + 3a² - 8a²b = - 3a³ + 3a²