Решите уравнение : 7-3(5x-3)=-11x

7-3(5x-3)=-11x

7-15x+9=-11x

-15x+11x=-7-9

-4x=-16

x= -16/-4

x=4

2х + у/3а^2(b+4ab)^2 = 2х + y/3a^2(b^2+8ab^2+16a2b2) = 2x + y/3a2b2+24a2b2+48a4b2 = 2x + y/ 3a2b2(1+8+16a2) = 2x+y/9+16a2 = 2x+y/знак корня 9+16a2 = 2x+y/3+4a = x+y/3+2a