Question

Номер 1308 уравнение. Пожалуйста решите умоляю .

Answer 1

а).у=15
б).х=43
в).х=-5
г).у=-12

Answer 2

$1)3(y - 5) - 2(y - 4) = 8 \ 3y - 15 - 2y + 8 = 8 \ 3y - 2y = 8 - 8 + 15 \ y = 15$


$2) - 5(5 - x) - 4x = 18 \ - 25 + 5x - 4x = 18 \ 5x - 4x = 18 + 25 \ x = 43$


$3) frac{1}{3} (3x - 6) - frac{2}{7} (7x - 21) = 9 \ x - 2 - 2x + 6 = 9 \ x - 2x = 9 - 6 + 2 \ - x = 5 \ x = 5 div ( - 1) \ x = - 5$



$4)5.4(3y - 2) - 7.2(2y - 3) = 1.2 \ 16.2y - 10.8 - 14.4y + 21.6 = 1.2 \ 16.2y - 14.4y = 1.2 - 21.6 + 10.8 \ 1.8y = - 9.6 \ y = - 9.6 div 1.8 \ y = - 5 frac{1}{3}$