Решить решить 11x-9=4x+19 5,6-3(2-0,4x)=0,4(4x+1) 2,7x+3y-9(y-1) 0,6(4x-3)+2,1(x-5)

11x-9=4x+19
7x=28
x=4

5,6-3(2-0,4x)=0,4(4x+1)
5.6-6+1.2x=1.6x+0.4
-0.4x=0.8
x=-2

2,7x+3y-9(y-1)=2.7x+3y-9y+9=2.7x-6y+9

0,6(4x-3)+2,1(x-5)=2.4x-1.8+2.1x-10.5=4.5x-12.3