e) 1/2 (x-1) + y = -2 i 1/2
x - 7 = 1 - y
h) x(x-6) -x(y+x) = y(3-x)
2x+y=0
e) 2(x+y) - (x-1) = y+2
x+y = 1
1/2 - jedna druga
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e) 1/2(x-1)+y=-2 i 1/2
1/2x - 1/2 + y = -2 i 1/2 / + 1/2
1/2x + y = -2 / : 1/2
x + y = -4
x - 7 = 1 - y / +7
x = 7 - y / + y
x + y = 7
h) x(x - 6) - x(y+x) = y(3-x)
x2 - 6x - xy - x2 = 3y - xy
-6x = 3y / : (-6)
x = 2y
2x + y = 0 / ; 2
x + y = o
e) 2(x+y) - (x-1) = y + 2
2x + 2y - x + 1 = y + 2
x + 2y + 1 = y + 2 / -y
x + y + 1 = 2 / - 1
x + y = 1