2u+6x+6y = 26 and 6u+6x+5y = 40 and 3u+4x+5y = 26 Solve each system of equations

2u+6x+6y-6x = 26-6x

2u+6y= 26-6x

2u+6y-6y= 26-6x-6y

2u= 26-6x-6y

2u/2= 26-6x-6y/2

u=13-3x-3y

6u+6x+5y = 40

6(13-3x-3y)+6x+5y = 40

6(13) (6)(-3x) (6)(-3y)+6x+5y = 40

78-18x-18y+6x+5y = 40

78-12x-13y = 40

78-78-12x-13y = 40-78

-12x-13y =-38

-12x-13y+13y =-38+13y

-12x=-38+13y

-12x/-12=-38+13y/-12

x=3.167-1.08y

u=13-3(3.167-1.08y)-3y

u=13-3(3.167) (-3)(-1.08y)-3y

u=13-9.5+3.24y-3y

u=3.5+.24y

3u+4x+5y = 26

3(3.5+.24y)+4(3.167-1.08y)+5y = 26

3(3.5) +(3)(.24y)+4(3.167) (4)(-1.08y)+5y = 26

10.5+.72y+12.67-4.32y+5y=26

23.17+1.4y=26

23.17+1.4y-23.17=26-23.17

1.4y=2.83

1.4y/1.4=2.83/1.4

y=2

u=3.5+.24(2)=3.5+.48=3.98=4

x=3.167-1.08(2)=3.167-2.16=1