5(3-2у)-4(9-у)=3(у+5)

15-10y-36+4y=3y+15

15-10y-36+4y-3y-15=0

-9y-36=0

-9y=36,

y= 36:(-9)

y= -4

14(2х-3)-5(х+4)=2(3х+5)+5х

28x-42-5x-20=6x+10+5x

28x-42-5x-20-6x-10-5x=0

12x-72=0

12x=72

x=72:12

x=6