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