Rozwiąż układ równań.
(x-y)/3-(x+y)/2=-1/2 /*6
x+y=3
2x-2y-3x-3y=-1/3
-x-5y=-1/3
-4y=2i2/3
-4y= 8/3
y=-2/3
x-2/3=3
x=3+2/3
x=11/3
| *6 ( pierwsze równanie )
2(x-y) - 3(x+y) = -3
x + y = 3
2x - 2y - 3x - 3y = -3
2x - 3x = -3 + 5y
-x = -3 + 5y | : (-1)
x + y = 5
x = 3 - 5y
3 - 5y + y = 5 (podstawiamy)
-4y = 5-3 | : (-4)
y = - 1/2 (-0,5)
x = 3 - 5 * (-0,5)
y = - 1/2
x = 5,5
y = - 0,5
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(x-y)/3-(x+y)/2=-1/2 /*6
x+y=3
2x-2y-3x-3y=-1/3
x+y=3
-x-5y=-1/3
x+y=3
-4y=2i2/3
-4y= 8/3
y=-2/3
x-2/3=3
x=3+2/3
x=11/3
| *6 ( pierwsze równanie )
2(x-y) - 3(x+y) = -3
x + y = 3
2x - 2y - 3x - 3y = -3
x + y = 3
2x - 3x = -3 + 5y
x + y = 3
-x = -3 + 5y | : (-1)
x + y = 5
x = 3 - 5y
3 - 5y + y = 5 (podstawiamy)
x = 3 - 5y
-4y = 5-3 | : (-4)
x = 3 - 5y
y = - 1/2 (-0,5)
x = 3 - 5 * (-0,5)
y = - 1/2
x = 5,5
y = - 0,5