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(x+y)/5=y/5=2 /*5
(2x+y)/3-3x/4=3/2 /*12
x+y+y=10
4(2x+y)-3*3x=18
x+2y=10
8x+4y-9x=18
-x+4y=18
6y=28/:6
y=4 i 4/6
y=4 i 2/3
x=10-2y
x=10 - 4 i 2/3
x=5 i 1/3
y= 4 i 2/3
(7x-3y)/5=(5x-y)/3 /*15
3(x-1)=5(x+1)
3(7x-3y)=5(5x-y)
3x-3=5y+5
21x-9y=25x-5y
3x-5y=8
-4x=4y /:4
3x-5y=5
y=-x
3x+5x=5
8x=5 /:8
x=5/8
y=-5/8
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(x+y)/5=y/5=2 /*5
(2x+y)/3-3x/4=3/2 /*12
x+y+y=10
4(2x+y)-3*3x=18
x+2y=10
8x+4y-9x=18
x+2y=10
-x+4y=18
6y=28/:6
y=4 i 4/6
y=4 i 2/3
x=10-2y
x=10 - 4 i 2/3
x=5 i 1/3
y= 4 i 2/3
(7x-3y)/5=(5x-y)/3 /*15
3(x-1)=5(x+1)
3(7x-3y)=5(5x-y)
3x-3=5y+5
21x-9y=25x-5y
3x-5y=8
-4x=4y /:4
3x-5y=5
y=-x
3x+5x=5
y=-x
8x=5 /:8
y=-x
x=5/8
x=5/8
y=-5/8