Rozwiąż równania metodą przeciwnych współczynników .
a)2x-2y=-2
2x-y=4
b)5x+2y=12
2x-5y=9
a)
2x-2y = -2
2x-y = 4 / *(-1)
-2x+y = -4
__________
-y = -6
y = 6
x = 5
b)
5x + 2y = 12 / * (-2)
2x - 5y = 9 / * (5)
-10x - 4y = -24
10x - 25y = 45
______________
-29y = 29
y = -1
x=2
a) 2x-2y= -2
2x-y=4/*(-1)
2x-2y=-2
-2x+y=-4
-y=-6
y=6
x=5
b) 5x+2y=12/*(-2)
2x-5y=9/*(-5)
-10x-4y=-24
10x-25y=45
-29y=29
y=-1
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a)
2x-2y = -2
2x-y = 4 / *(-1)
2x-2y = -2
-2x+y = -4
__________
-y = -6
y = 6
x = 5
b)
5x + 2y = 12 / * (-2)
2x - 5y = 9 / * (5)
-10x - 4y = -24
10x - 25y = 45
______________
-29y = 29
y = -1
x=2
a) 2x-2y= -2
2x-y=4/*(-1)
2x-2y=-2
-2x+y=-4
-y=-6
y=6
x=5
b) 5x+2y=12/*(-2)
2x-5y=9/*(-5)
-10x-4y=-24
10x-25y=45
-29y=29
y=-1
x=2