Упростите выражение: 4/9(2,7x-2.1/4)-4,2(5/7x-0,5y)

Question

Упростите выражение:

4/9(2,7x-2.1/4)-4,2(5/7x-0,5y)

Answer 1

1,2*x-7/3*y-3*x+2.1*y= -1/8*x + 7/30*y

Answer 2

4/9(2,7x-2.1/4)-4,2(5/7x-0,5y)=1.2х-2.1/9-3х+2.1у = 2.1у-1.8х-2.1/9